Home / 103,242.83-142,324.29-72,974.75

Finding the Fourth Proportional to 103,242.83, 142,324.29 and 72,974.75

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Solution

The fourth proportional to 103,242.83, 142,324.29 and 72,974.75 is: 100,598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,242.83 : 142,324.29 = 72,974.75 : x
  2. Step 2: Convert to fraction form
    103,242.83/142,324.29 = 72,974.75/x
  3. Step 3: Cross multiply
    103,242.83x = 142,324.29 × 72,974.75
  4. Step 4: Simplify right side
    103,242.83x = 10,386,078,770.06
  5. Step 5: Solve for x
    x = 10,386,078,770.06/103,242.83
  6. Step 6: Final answer
    x = 100,598.55

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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.