Home / 100,240.02-138,330.06-54,298.80

Finding the Fourth Proportional to 100,240.02, 138,330.06 and 54,298.80

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Solution

The fourth proportional to 100,240.02, 138,330.06 and 54,298.80 is: 74,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,240.02 : 138,330.06 = 54,298.80 : x
  2. Step 2: Convert to fraction form
    100,240.02/138,330.06 = 54,298.80/x
  3. Step 3: Cross multiply
    100,240.02x = 138,330.06 × 54,298.80
  4. Step 4: Simplify right side
    100,240.02x = 7,511,156,261.93
  5. Step 5: Solve for x
    x = 7,511,156,261.93/100,240.02
  6. Step 6: Final answer
    x = 74,931.71

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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.