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Finding the Fourth Proportional to 123,358.76, 170,266.98 and 80,445.22

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Solution

The fourth proportional to 123,358.76, 170,266.98 and 80,445.22 is: 111,035.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,358.76 : 170,266.98 = 80,445.22 : x
  2. Step 2: Convert to fraction form
    123,358.76/170,266.98 = 80,445.22/x
  3. Step 3: Cross multiply
    123,358.76x = 170,266.98 × 80,445.22
  4. Step 4: Simplify right side
    123,358.76x = 13,697,164,664.84
  5. Step 5: Solve for x
    x = 13,697,164,664.84/123,358.76
  6. Step 6: Final answer
    x = 111,035.20

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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.