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Finding the Fourth Proportional to 158,349.01, 218,519.42 and 90,387.53

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Solution

The fourth proportional to 158,349.01, 218,519.42 and 90,387.53 is: 124,733.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,349.01 : 218,519.42 = 90,387.53 : x
  2. Step 2: Convert to fraction form
    158,349.01/218,519.42 = 90,387.53/x
  3. Step 3: Cross multiply
    158,349.01x = 218,519.42 × 90,387.53
  4. Step 4: Simplify right side
    158,349.01x = 19,751,430,630.83
  5. Step 5: Solve for x
    x = 19,751,430,630.83/158,349.01
  6. Step 6: Final answer
    x = 124,733.53

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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.