Home / 108,001.60-162,002.40-85,694.20

Finding the Fourth Proportional to 108,001.60, 162,002.40 and 85,694.20

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Solution

The fourth proportional to 108,001.60, 162,002.40 and 85,694.20 is: 128,541.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,001.60 : 162,002.40 = 85,694.20 : x
  2. Step 2: Convert to fraction form
    108,001.60/162,002.40 = 85,694.20/x
  3. Step 3: Cross multiply
    108,001.60x = 162,002.40 × 85,694.20
  4. Step 4: Simplify right side
    108,001.60x = 13,882,666,066.08
  5. Step 5: Solve for x
    x = 13,882,666,066.08/108,001.60
  6. Step 6: Final answer
    x = 128,541.30

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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.