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Finding the Fourth Proportional to 100,598.57, 138,780.36 and 62,347.94

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Solution

The fourth proportional to 100,598.57, 138,780.36 and 62,347.94 is: 86,011.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,598.57 : 138,780.36 = 62,347.94 : x
  2. Step 2: Convert to fraction form
    100,598.57/138,780.36 = 62,347.94/x
  3. Step 3: Cross multiply
    100,598.57x = 138,780.36 × 62,347.94
  4. Step 4: Simplify right side
    100,598.57x = 8,652,668,864.56
  5. Step 5: Solve for x
    x = 8,652,668,864.56/100,598.57
  6. Step 6: Final answer
    x = 86,011.85

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1.5x scale

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.