Home / 121,785.12-182,680.92-42,881.40

Finding the Fourth Proportional to 121,785.12, 182,680.92 and 42,881.40

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Solution

The fourth proportional to 121,785.12, 182,680.92 and 42,881.40 is: 64,323.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,785.12 : 182,680.92 = 42,881.40 : x
  2. Step 2: Convert to fraction form
    121,785.12/182,680.92 = 42,881.40/x
  3. Step 3: Cross multiply
    121,785.12x = 182,680.92 × 42,881.40
  4. Step 4: Simplify right side
    121,785.12x = 7,833,613,602.89
  5. Step 5: Solve for x
    x = 7,833,613,602.89/121,785.12
  6. Step 6: Final answer
    x = 64,323.24

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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.