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Finding the Fourth Proportional to 124,803.92, 172,205.52 and 71,087.76

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Solution

The fourth proportional to 124,803.92, 172,205.52 and 71,087.76 is: 98,087.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,803.92 : 172,205.52 = 71,087.76 : x
  2. Step 2: Convert to fraction form
    124,803.92/172,205.52 = 71,087.76/x
  3. Step 3: Cross multiply
    124,803.92x = 172,205.52 × 71,087.76
  4. Step 4: Simplify right side
    124,803.92x = 12,241,704,676.44
  5. Step 5: Solve for x
    x = 12,241,704,676.44/124,803.92
  6. Step 6: Final answer
    x = 98,087.50

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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.