Home / 138,807.57-191,555.07-75,145.35

Finding the Fourth Proportional to 138,807.57, 191,555.07 and 75,145.35

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Solution

The fourth proportional to 138,807.57, 191,555.07 and 75,145.35 is: 103,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,807.57 : 191,555.07 = 75,145.35 : x
  2. Step 2: Convert to fraction form
    138,807.57/191,555.07 = 75,145.35/x
  3. Step 3: Cross multiply
    138,807.57x = 191,555.07 × 75,145.35
  4. Step 4: Simplify right side
    138,807.57x = 14,394,472,779.42
  5. Step 5: Solve for x
    x = 14,394,472,779.42/138,807.57
  6. Step 6: Final answer
    x = 103,700.92

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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.