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Finding the Fourth Proportional to 125,338.32, 172,988.99 and 74,379.15

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Solution

The fourth proportional to 125,338.32, 172,988.99 and 74,379.15 is: 102,656.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,338.32 : 172,988.99 = 74,379.15 : x
  2. Step 2: Convert to fraction form
    125,338.32/172,988.99 = 74,379.15/x
  3. Step 3: Cross multiply
    125,338.32x = 172,988.99 × 74,379.15
  4. Step 4: Simplify right side
    125,338.32x = 12,866,774,035.56
  5. Step 5: Solve for x
    x = 12,866,774,035.56/125,338.32
  6. Step 6: Final answer
    x = 102,656.35

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