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Finding the Fourth Proportional to 124,577, 171,921 and 70,866.92

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Solution

The fourth proportional to 124,577, 171,921 and 70,866.92 is: 97,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,577 : 171,921 = 70,866.92 : x
  2. Step 2: Convert to fraction form
    124,577/171,921 = 70,866.92/x
  3. Step 3: Cross multiply
    124,577x = 171,921 × 70,866.92
  4. Step 4: Simplify right side
    124,577x = 12,183,511,753.32
  5. Step 5: Solve for x
    x = 12,183,511,753.32/124,577
  6. Step 6: Final answer
    x = 97,799.05

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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.