Home / 100,432.32-138,598.08-55,114.80

Finding the Fourth Proportional to 100,432.32, 138,598.08 and 55,114.80

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Solution

The fourth proportional to 100,432.32, 138,598.08 and 55,114.80 is: 76,059.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,432.32 : 138,598.08 = 55,114.80 : x
  2. Step 2: Convert to fraction form
    100,432.32/138,598.08 = 55,114.80/x
  3. Step 3: Cross multiply
    100,432.32x = 138,598.08 × 55,114.80
  4. Step 4: Simplify right side
    100,432.32x = 7,638,805,459.58
  5. Step 5: Solve for x
    x = 7,638,805,459.58/100,432.32
  6. Step 6: Final answer
    x = 76,059.24

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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.