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Finding the Fourth Proportional to 180,492.28, 249,101.70 and 102,987.04

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Solution

The fourth proportional to 180,492.28, 249,101.70 and 102,987.04 is: 142,134.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,492.28 : 249,101.70 = 102,987.04 : x
  2. Step 2: Convert to fraction form
    180,492.28/249,101.70 = 102,987.04/x
  3. Step 3: Cross multiply
    180,492.28x = 249,101.70 × 102,987.04
  4. Step 4: Simplify right side
    180,492.28x = 25,654,246,741.97
  5. Step 5: Solve for x
    x = 25,654,246,741.97/180,492.28
  6. Step 6: Final answer
    x = 142,134.87

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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.