Home / 138,700.44-191,407.05-75,038.76

Finding the Fourth Proportional to 138,700.44, 191,407.05 and 75,038.76

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Solution

The fourth proportional to 138,700.44, 191,407.05 and 75,038.76 is: 103,553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,700.44 : 191,407.05 = 75,038.76 : x
  2. Step 2: Convert to fraction form
    138,700.44/191,407.05 = 75,038.76/x
  3. Step 3: Cross multiply
    138,700.44x = 191,407.05 × 75,038.76
  4. Step 4: Simplify right side
    138,700.44x = 14,362,947,687.26
  5. Step 5: Solve for x
    x = 14,362,947,687.26/138,700.44
  6. Step 6: Final answer
    x = 103,553.73

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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.