Home / 138,750.06-191,475.07-75,087.87

Finding the Fourth Proportional to 138,750.06, 191,475.07 and 75,087.87

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Solution

The fourth proportional to 138,750.06, 191,475.07 and 75,087.87 is: 103,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,750.06 : 191,475.07 = 75,087.87 : x
  2. Step 2: Convert to fraction form
    138,750.06/191,475.07 = 75,087.87/x
  3. Step 3: Cross multiply
    138,750.06x = 191,475.07 × 75,087.87
  4. Step 4: Simplify right side
    138,750.06x = 14,377,455,164.40
  5. Step 5: Solve for x
    x = 14,377,455,164.40/138,750.06
  6. Step 6: Final answer
    x = 103,621.25

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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.