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Finding the Fourth Proportional to 153,874.53, 212,382.29 and 90,232.83

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Solution

The fourth proportional to 153,874.53, 212,382.29 and 90,232.83 is: 124,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,874.53 : 212,382.29 = 90,232.83 : x
  2. Step 2: Convert to fraction form
    153,874.53/212,382.29 = 90,232.83/x
  3. Step 3: Cross multiply
    153,874.53x = 212,382.29 × 90,232.83
  4. Step 4: Simplify right side
    153,874.53x = 19,163,854,617.42
  5. Step 5: Solve for x
    x = 19,163,854,617.42/153,874.53
  6. Step 6: Final answer
    x = 124,542.08

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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.