Home / 134,531.28-185,547.20-83,515.20

Finding the Fourth Proportional to 134,531.28, 185,547.20 and 83,515.20

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Solution

The fourth proportional to 134,531.28, 185,547.20 and 83,515.20 is: 115,185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,531.28 : 185,547.20 = 83,515.20 : x
  2. Step 2: Convert to fraction form
    134,531.28/185,547.20 = 83,515.20/x
  3. Step 3: Cross multiply
    134,531.28x = 185,547.20 × 83,515.20
  4. Step 4: Simplify right side
    134,531.28x = 15,496,011,517.44
  5. Step 5: Solve for x
    x = 15,496,011,517.44/134,531.28
  6. Step 6: Final answer
    x = 115,185.19

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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.