Home / 121,631.12-182,372.16-42,754.40

Finding the Fourth Proportional to 121,631.12, 182,372.16 and 42,754.40

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Solution

The fourth proportional to 121,631.12, 182,372.16 and 42,754.40 is: 64,105.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,631.12 : 182,372.16 = 42,754.40 : x
  2. Step 2: Convert to fraction form
    121,631.12/182,372.16 = 42,754.40/x
  3. Step 3: Cross multiply
    121,631.12x = 182,372.16 × 42,754.40
  4. Step 4: Simplify right side
    121,631.12x = 7,797,212,277.50
  5. Step 5: Solve for x
    x = 7,797,212,277.50/121,631.12
  6. Step 6: Final answer
    x = 64,105.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.