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Finding the Fourth Proportional to 158,153.78, 218,250.24 and 90,168.59

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Solution

The fourth proportional to 158,153.78, 218,250.24 and 90,168.59 is: 124,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,153.78 : 218,250.24 = 90,168.59 : x
  2. Step 2: Convert to fraction form
    158,153.78/218,250.24 = 90,168.59/x
  3. Step 3: Cross multiply
    158,153.78x = 218,250.24 × 90,168.59
  4. Step 4: Simplify right side
    158,153.78x = 19,679,316,407.96
  5. Step 5: Solve for x
    x = 19,679,316,407.96/158,153.78
  6. Step 6: Final answer
    x = 124,431.53

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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.