Home / 145,473,768,118.20-218,210,652,177.30-85,965,981,007.80

Finding the Fourth Proportional to 145,473,768,118.20, 218,210,652,177.30 and 85,965,981,007.80

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Solution

The fourth proportional to 145,473,768,118.20, 218,210,652,177.30 and 85,965,981,007.80 is: 128,948,971,511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,473,768,118.20 : 218,210,652,177.30 = 85,965,981,007.80 : x
  2. Step 2: Convert to fraction form
    145,473,768,118.20/218,210,652,177.30 = 85,965,981,007.80/x
  3. Step 3: Cross multiply
    145,473,768,118.20x = 218,210,652,177.30 × 85,965,981,007.80
  4. Step 4: Simplify right side
    145,473,768,118.20x = 18,758,692,780,773,423,972,352
  5. Step 5: Solve for x
    x = 18,758,692,780,773,423,972,352/145,473,768,118.20
  6. Step 6: Final answer
    x = 128,948,971,511.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.