Home / 125,702,810.47-173,371,605.15-81,663,998.61

Finding the Fourth Proportional to 125,702,810.47, 173,371,605.15 and 81,663,998.61

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Solution

The fourth proportional to 125,702,810.47, 173,371,605.15 and 81,663,998.61 is: 112,632,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,702,810.47 : 173,371,605.15 = 81,663,998.61 : x
  2. Step 2: Convert to fraction form
    125,702,810.47/173,371,605.15 = 81,663,998.61/x
  3. Step 3: Cross multiply
    125,702,810.47x = 173,371,605.15 × 81,663,998.61
  4. Step 4: Simplify right side
    125,702,810.47x = 14,158,218,521,983,070
  5. Step 5: Solve for x
    x = 14,158,218,521,983,070/125,702,810.47
  6. Step 6: Final answer
    x = 112,632,473.92

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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.