Home / 139,008.72-208,438.13-75,001.17

Finding the Fourth Proportional to 139,008.72, 208,438.13 and 75,001.17

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Solution

The fourth proportional to 139,008.72, 208,438.13 and 75,001.17 is: 112,461.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,008.72 : 208,438.13 = 75,001.17 : x
  2. Step 2: Convert to fraction form
    139,008.72/208,438.13 = 75,001.17/x
  3. Step 3: Cross multiply
    139,008.72x = 208,438.13 × 75,001.17
  4. Step 4: Simplify right side
    139,008.72x = 15,633,103,247.61
  5. Step 5: Solve for x
    x = 15,633,103,247.61/139,008.72
  6. Step 6: Final answer
    x = 112,461.31

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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.