Home / 138,864.40-191,632.90-75,202.20

Finding the Fourth Proportional to 138,864.40, 191,632.90 and 75,202.20

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Solution

The fourth proportional to 138,864.40, 191,632.90 and 75,202.20 is: 103,779.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,864.40 : 191,632.90 = 75,202.20 : x
  2. Step 2: Convert to fraction form
    138,864.40/191,632.90 = 75,202.20/x
  3. Step 3: Cross multiply
    138,864.40x = 191,632.90 × 75,202.20
  4. Step 4: Simplify right side
    138,864.40x = 14,411,215,672.38
  5. Step 5: Solve for x
    x = 14,411,215,672.38/138,864.40
  6. Step 6: Final answer
    x = 103,779.05

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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.