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Finding the Fourth Proportional to 108,715.66, 150,044.01 and 66,298.79

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Solution

The fourth proportional to 108,715.66, 150,044.01 and 66,298.79 is: 91,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,715.66 : 150,044.01 = 66,298.79 : x
  2. Step 2: Convert to fraction form
    108,715.66/150,044.01 = 66,298.79/x
  3. Step 3: Cross multiply
    108,715.66x = 150,044.01 × 66,298.79
  4. Step 4: Simplify right side
    108,715.66x = 9,947,736,309.75
  5. Step 5: Solve for x
    x = 9,947,736,309.75/108,715.66
  6. Step 6: Final answer
    x = 91,502.33

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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.