Home / 145,541,310.30-218,311,965.45-72,769,322.70

Finding the Fourth Proportional to 145,541,310.30, 218,311,965.45 and 72,769,322.70

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Solution

The fourth proportional to 145,541,310.30, 218,311,965.45 and 72,769,322.70 is: 109,153,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,541,310.30 : 218,311,965.45 = 72,769,322.70 : x
  2. Step 2: Convert to fraction form
    145,541,310.30/218,311,965.45 = 72,769,322.70/x
  3. Step 3: Cross multiply
    145,541,310.30x = 218,311,965.45 × 72,769,322.70
  4. Step 4: Simplify right side
    145,541,310.30x = 15,886,413,863,102,300
  5. Step 5: Solve for x
    x = 15,886,413,863,102,300/145,541,310.30
  6. Step 6: Final answer
    x = 109,153,984.05

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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.