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Finding the Fourth Proportional to 125,740.68, 188,606.12 and 42,634.68

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Solution

The fourth proportional to 125,740.68, 188,606.12 and 42,634.68 is: 63,950.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,740.68 : 188,606.12 = 42,634.68 : x
  2. Step 2: Convert to fraction form
    125,740.68/188,606.12 = 42,634.68/x
  3. Step 3: Cross multiply
    125,740.68x = 188,606.12 × 42,634.68
  4. Step 4: Simplify right side
    125,740.68x = 8,041,161,359.07
  5. Step 5: Solve for x
    x = 8,041,161,359.07/125,740.68
  6. Step 6: Final answer
    x = 63,950.36

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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.