Home / 198,145,715.40-297,218,573.10-61,813,384.20

Finding the Fourth Proportional to 198,145,715.40, 297,218,573.10 and 61,813,384.20

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Solution

The fourth proportional to 198,145,715.40, 297,218,573.10 and 61,813,384.20 is: 92,720,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,145,715.40 : 297,218,573.10 = 61,813,384.20 : x
  2. Step 2: Convert to fraction form
    198,145,715.40/297,218,573.10 = 61,813,384.20/x
  3. Step 3: Cross multiply
    198,145,715.40x = 297,218,573.10 × 61,813,384.20
  4. Step 4: Simplify right side
    198,145,715.40x = 18,372,085,850,406,088
  5. Step 5: Solve for x
    x = 18,372,085,850,406,088/198,145,715.40
  6. Step 6: Final answer
    x = 92,720,076.30

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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.