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Finding the Fourth Proportional to 124,017.78, 170,840.82 and 89,926.08

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Solution

The fourth proportional to 124,017.78, 170,840.82 and 89,926.08 is: 123,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,017.78 : 170,840.82 = 89,926.08 : x
  2. Step 2: Convert to fraction form
    124,017.78/170,840.82 = 89,926.08/x
  3. Step 3: Cross multiply
    124,017.78x = 170,840.82 × 89,926.08
  4. Step 4: Simplify right side
    124,017.78x = 15,363,045,246.59
  5. Step 5: Solve for x
    x = 15,363,045,246.59/124,017.78
  6. Step 6: Final answer
    x = 123,877.76

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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.