Home / 145,672,890.30-218,509,335.45-129,800,519.10

Finding the Fourth Proportional to 145,672,890.30, 218,509,335.45 and 129,800,519.10

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Solution

The fourth proportional to 145,672,890.30, 218,509,335.45 and 129,800,519.10 is: 194,700,778.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,672,890.30 : 218,509,335.45 = 129,800,519.10 : x
  2. Step 2: Convert to fraction form
    145,672,890.30/218,509,335.45 = 129,800,519.10/x
  3. Step 3: Cross multiply
    145,672,890.30x = 218,509,335.45 × 129,800,519.10
  4. Step 4: Simplify right side
    145,672,890.30x = 28,362,625,169,606,028
  5. Step 5: Solve for x
    x = 28,362,625,169,606,028/145,672,890.30
  6. Step 6: Final answer
    x = 194,700,778.65

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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.