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Finding the Fourth Proportional to 120,061.66, 179,967.32 and 45,130.18

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Solution

The fourth proportional to 120,061.66, 179,967.32 and 45,130.18 is: 67,648.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,061.66 : 179,967.32 = 45,130.18 : x
  2. Step 2: Convert to fraction form
    120,061.66/179,967.32 = 45,130.18/x
  3. Step 3: Cross multiply
    120,061.66x = 179,967.32 × 45,130.18
  4. Step 4: Simplify right side
    120,061.66x = 8,121,957,545.72
  5. Step 5: Solve for x
    x = 8,121,957,545.72/120,061.66
  6. Step 6: Final answer
    x = 67,648.22

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1.5x scale

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.