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Finding the Fourth Proportional to 125,362.10, 172,989.32 and 68,773.47

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Solution

The fourth proportional to 125,362.10, 172,989.32 and 68,773.47 is: 94,901.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,362.10 : 172,989.32 = 68,773.47 : x
  2. Step 2: Convert to fraction form
    125,362.10/172,989.32 = 68,773.47/x
  3. Step 3: Cross multiply
    125,362.10x = 172,989.32 × 68,773.47
  4. Step 4: Simplify right side
    125,362.10x = 11,897,075,465.47
  5. Step 5: Solve for x
    x = 11,897,075,465.47/125,362.10
  6. Step 6: Final answer
    x = 94,901.70

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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.