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Finding the Fourth Proportional to 120,061.65, 179,967.33 and 45,130.17

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Solution

The fourth proportional to 120,061.65, 179,967.33 and 45,130.17 is: 67,648.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,061.65 : 179,967.33 = 45,130.17 : x
  2. Step 2: Convert to fraction form
    120,061.65/179,967.33 = 45,130.17/x
  3. Step 3: Cross multiply
    120,061.65x = 179,967.33 × 45,130.17
  4. Step 4: Simplify right side
    120,061.65x = 8,121,956,197.35
  5. Step 5: Solve for x
    x = 8,121,956,197.35/120,061.65
  6. Step 6: Final answer
    x = 67,648.21

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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.