Home / 138,947.80-191,748.01-75,285.59

Finding the Fourth Proportional to 138,947.80, 191,748.01 and 75,285.59

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Solution

The fourth proportional to 138,947.80, 191,748.01 and 75,285.59 is: 103,894.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,947.80 : 191,748.01 = 75,285.59 : x
  2. Step 2: Convert to fraction form
    138,947.80/191,748.01 = 75,285.59/x
  3. Step 3: Cross multiply
    138,947.80x = 191,748.01 × 75,285.59
  4. Step 4: Simplify right side
    138,947.80x = 14,435,862,064.18
  5. Step 5: Solve for x
    x = 14,435,862,064.18/138,947.80
  6. Step 6: Final answer
    x = 103,894.14

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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.