Home / 143,564,785.92-198,118,396.80-78,374,689.92

Finding the Fourth Proportional to 143,564,785.92, 198,118,396.80 and 78,374,689.92

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Solution

The fourth proportional to 143,564,785.92, 198,118,396.80 and 78,374,689.92 is: 108,156,521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,564,785.92 : 198,118,396.80 = 78,374,689.92 : x
  2. Step 2: Convert to fraction form
    143,564,785.92/198,118,396.80 = 78,374,689.92/x
  3. Step 3: Cross multiply
    143,564,785.92x = 198,118,396.80 × 78,374,689.92
  4. Step 4: Simplify right side
    143,564,785.92x = 15,527,467,916,647,522
  5. Step 5: Solve for x
    x = 15,527,467,916,647,522/143,564,785.92
  6. Step 6: Final answer
    x = 108,156,521.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.