Home / 198,145,721.40-297,218,582.10-61,813,390.20

Finding the Fourth Proportional to 198,145,721.40, 297,218,582.10 and 61,813,390.20

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Solution

The fourth proportional to 198,145,721.40, 297,218,582.10 and 61,813,390.20 is: 92,720,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,145,721.40 : 297,218,582.10 = 61,813,390.20 : x
  2. Step 2: Convert to fraction form
    198,145,721.40/297,218,582.10 = 61,813,390.20/x
  3. Step 3: Cross multiply
    198,145,721.40x = 297,218,582.10 × 61,813,390.20
  4. Step 4: Simplify right side
    198,145,721.40x = 18,372,088,190,038,036
  5. Step 5: Solve for x
    x = 18,372,088,190,038,036/198,145,721.40
  6. Step 6: Final answer
    x = 92,720,085.30

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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.