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Finding the Fourth Proportional to 98,164.60, 147,246.90 and 87,278.20

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Solution

The fourth proportional to 98,164.60, 147,246.90 and 87,278.20 is: 130,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,164.60 : 147,246.90 = 87,278.20 : x
  2. Step 2: Convert to fraction form
    98,164.60/147,246.90 = 87,278.20/x
  3. Step 3: Cross multiply
    98,164.60x = 147,246.90 × 87,278.20
  4. Step 4: Simplify right side
    98,164.60x = 12,851,444,387.58
  5. Step 5: Solve for x
    x = 12,851,444,387.58/98,164.60
  6. Step 6: Final answer
    x = 130,917.30

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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.