Home / 138,817.36-191,568.08-75,155.20

Finding the Fourth Proportional to 138,817.36, 191,568.08 and 75,155.20

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Solution

The fourth proportional to 138,817.36, 191,568.08 and 75,155.20 is: 103,714.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,817.36 : 191,568.08 = 75,155.20 : x
  2. Step 2: Convert to fraction form
    138,817.36/191,568.08 = 75,155.20/x
  3. Step 3: Cross multiply
    138,817.36x = 191,568.08 × 75,155.20
  4. Step 4: Simplify right side
    138,817.36x = 14,397,337,366.02
  5. Step 5: Solve for x
    x = 14,397,337,366.02/138,817.36
  6. Step 6: Final answer
    x = 103,714.24

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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.