Home / 138,807.96-191,555.04-75,145.76

Finding the Fourth Proportional to 138,807.96, 191,555.04 and 75,145.76

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Solution

The fourth proportional to 138,807.96, 191,555.04 and 75,145.76 is: 103,701.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,807.96 : 191,555.04 = 75,145.76 : x
  2. Step 2: Convert to fraction form
    138,807.96/191,555.04 = 75,145.76/x
  3. Step 3: Cross multiply
    138,807.96x = 191,555.04 × 75,145.76
  4. Step 4: Simplify right side
    138,807.96x = 14,394,549,062.63
  5. Step 5: Solve for x
    x = 14,394,549,062.63/138,807.96
  6. Step 6: Final answer
    x = 103,701.18

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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.