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Finding the Fourth Proportional to 125,681.99, 188,612.96 and 45,719.82

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Solution

The fourth proportional to 125,681.99, 188,612.96 and 45,719.82 is: 68,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,681.99 : 188,612.96 = 45,719.82 : x
  2. Step 2: Convert to fraction form
    125,681.99/188,612.96 = 45,719.82/x
  3. Step 3: Cross multiply
    125,681.99x = 188,612.96 × 45,719.82
  4. Step 4: Simplify right side
    125,681.99x = 8,623,350,352.27
  5. Step 5: Solve for x
    x = 8,623,350,352.27/125,681.99
  6. Step 6: Final answer
    x = 68,612.46

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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.