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Finding the Fourth Proportional to 108,618.60, 162,927.90 and 99,287.40

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Solution

The fourth proportional to 108,618.60, 162,927.90 and 99,287.40 is: 148,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,618.60 : 162,927.90 = 99,287.40 : x
  2. Step 2: Convert to fraction form
    108,618.60/162,927.90 = 99,287.40/x
  3. Step 3: Cross multiply
    108,618.60x = 162,927.90 × 99,287.40
  4. Step 4: Simplify right side
    108,618.60x = 16,176,687,578.46
  5. Step 5: Solve for x
    x = 16,176,687,578.46/108,618.60
  6. Step 6: Final answer
    x = 148,931.10

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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.