Home / 138,750.39-191,475.54-75,088.65

Finding the Fourth Proportional to 138,750.39, 191,475.54 and 75,088.65

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Solution

The fourth proportional to 138,750.39, 191,475.54 and 75,088.65 is: 103,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,750.39 : 191,475.54 = 75,088.65 : x
  2. Step 2: Convert to fraction form
    138,750.39/191,475.54 = 75,088.65/x
  3. Step 3: Cross multiply
    138,750.39x = 191,475.54 × 75,088.65
  4. Step 4: Simplify right side
    138,750.39x = 14,377,639,806.62
  5. Step 5: Solve for x
    x = 14,377,639,806.62/138,750.39
  6. Step 6: Final answer
    x = 103,622.34

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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.