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Finding the Fourth Proportional to 101,332.56, 152,018.36 and 42,136.40

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Solution

The fourth proportional to 101,332.56, 152,018.36 and 42,136.40 is: 63,212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,332.56 : 152,018.36 = 42,136.40 : x
  2. Step 2: Convert to fraction form
    101,332.56/152,018.36 = 42,136.40/x
  3. Step 3: Cross multiply
    101,332.56x = 152,018.36 × 42,136.40
  4. Step 4: Simplify right side
    101,332.56x = 6,405,506,424.30
  5. Step 5: Solve for x
    x = 6,405,506,424.30/101,332.56
  6. Step 6: Final answer
    x = 63,212.72

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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.