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Finding the Fourth Proportional to 151,331.68, 208,837.60 and 83,349.12

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Solution

The fourth proportional to 151,331.68, 208,837.60 and 83,349.12 is: 115,021.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,331.68 : 208,837.60 = 83,349.12 : x
  2. Step 2: Convert to fraction form
    151,331.68/208,837.60 = 83,349.12/x
  3. Step 3: Cross multiply
    151,331.68x = 208,837.60 × 83,349.12
  4. Step 4: Simplify right side
    151,331.68x = 17,406,430,182.91
  5. Step 5: Solve for x
    x = 17,406,430,182.91/151,331.68
  6. Step 6: Final answer
    x = 115,021.72

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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.