Home / 100,084.52-138,116.57-54,762.80

Finding the Fourth Proportional to 100,084.52, 138,116.57 and 54,762.80

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Solution

The fourth proportional to 100,084.52, 138,116.57 and 54,762.80 is: 75,572.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,084.52 : 138,116.57 = 54,762.80 : x
  2. Step 2: Convert to fraction form
    100,084.52/138,116.57 = 54,762.80/x
  3. Step 3: Cross multiply
    100,084.52x = 138,116.57 × 54,762.80
  4. Step 4: Simplify right side
    100,084.52x = 7,563,649,825.78
  5. Step 5: Solve for x
    x = 7,563,649,825.78/100,084.52
  6. Step 6: Final answer
    x = 75,572.62

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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.