Home / 107,013.75-147,678.66-61,691.49

Finding the Fourth Proportional to 107,013.75, 147,678.66 and 61,691.49

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Solution

The fourth proportional to 107,013.75, 147,678.66 and 61,691.49 is: 85,134.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,013.75 : 147,678.66 = 61,691.49 : x
  2. Step 2: Convert to fraction form
    107,013.75/147,678.66 = 61,691.49/x
  3. Step 3: Cross multiply
    107,013.75x = 147,678.66 × 61,691.49
  4. Step 4: Simplify right side
    107,013.75x = 9,110,516,576.60
  5. Step 5: Solve for x
    x = 9,110,516,576.60/107,013.75
  6. Step 6: Final answer
    x = 85,134.07

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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.