Home / 142,223.18-196,265.95-77,691.65

Finding the Fourth Proportional to 142,223.18, 196,265.95 and 77,691.65

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Solution

The fourth proportional to 142,223.18, 196,265.95 and 77,691.65 is: 107,213.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,223.18 : 196,265.95 = 77,691.65 : x
  2. Step 2: Convert to fraction form
    142,223.18/196,265.95 = 77,691.65/x
  3. Step 3: Cross multiply
    142,223.18x = 196,265.95 × 77,691.65
  4. Step 4: Simplify right side
    142,223.18x = 15,248,224,809.42
  5. Step 5: Solve for x
    x = 15,248,224,809.42/142,223.18
  6. Step 6: Final answer
    x = 107,213.36

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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.