Home / 100,541.04-138,657.60-76,610.40

Finding the Fourth Proportional to 100,541.04, 138,657.60 and 76,610.40

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Solution

The fourth proportional to 100,541.04, 138,657.60 and 76,610.40 is: 105,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,541.04 : 138,657.60 = 76,610.40 : x
  2. Step 2: Convert to fraction form
    100,541.04/138,657.60 = 76,610.40/x
  3. Step 3: Cross multiply
    100,541.04x = 138,657.60 × 76,610.40
  4. Step 4: Simplify right side
    100,541.04x = 10,622,614,199.04
  5. Step 5: Solve for x
    x = 10,622,614,199.04/100,541.04
  6. Step 6: Final answer
    x = 105,654.51

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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.