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Finding the Fourth Proportional to 136,044.60, 204,066.90 and 98,428.20

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Solution

The fourth proportional to 136,044.60, 204,066.90 and 98,428.20 is: 147,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,044.60 : 204,066.90 = 98,428.20 : x
  2. Step 2: Convert to fraction form
    136,044.60/204,066.90 = 98,428.20/x
  3. Step 3: Cross multiply
    136,044.60x = 204,066.90 × 98,428.20
  4. Step 4: Simplify right side
    136,044.60x = 20,085,937,646.58
  5. Step 5: Solve for x
    x = 20,085,937,646.58/136,044.60
  6. Step 6: Final answer
    x = 147,642.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.