Home / 145,156,811.40-217,735,217.10-72,597,400.20

Finding the Fourth Proportional to 145,156,811.40, 217,735,217.10 and 72,597,400.20

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Solution

The fourth proportional to 145,156,811.40, 217,735,217.10 and 72,597,400.20 is: 108,896,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,156,811.40 : 217,735,217.10 = 72,597,400.20 : x
  2. Step 2: Convert to fraction form
    145,156,811.40/217,735,217.10 = 72,597,400.20/x
  3. Step 3: Cross multiply
    145,156,811.40x = 217,735,217.10 × 72,597,400.20
  4. Step 4: Simplify right side
    145,156,811.40x = 15,807,010,693,442,584
  5. Step 5: Solve for x
    x = 15,807,010,693,442,584/145,156,811.40
  6. Step 6: Final answer
    x = 108,896,100.30

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1.5x scale

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.