Home / 121,812.16-182,679.36-38,686.72

Finding the Fourth Proportional to 121,812.16, 182,679.36 and 38,686.72

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Solution

The fourth proportional to 121,812.16, 182,679.36 and 38,686.72 is: 58,017.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,812.16 : 182,679.36 = 38,686.72 : x
  2. Step 2: Convert to fraction form
    121,812.16/182,679.36 = 38,686.72/x
  3. Step 3: Cross multiply
    121,812.16x = 182,679.36 × 38,686.72
  4. Step 4: Simplify right side
    121,812.16x = 7,067,265,250.10
  5. Step 5: Solve for x
    x = 7,067,265,250.10/121,812.16
  6. Step 6: Final answer
    x = 58,017.73

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1.5x scale

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.