Home / 121,979.52-182,969.28-51,809.76

Finding the Fourth Proportional to 121,979.52, 182,969.28 and 51,809.76

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Solution

The fourth proportional to 121,979.52, 182,969.28 and 51,809.76 is: 77,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,979.52 : 182,969.28 = 51,809.76 : x
  2. Step 2: Convert to fraction form
    121,979.52/182,969.28 = 51,809.76/x
  3. Step 3: Cross multiply
    121,979.52x = 182,969.28 × 51,809.76
  4. Step 4: Simplify right side
    121,979.52x = 9,479,594,484.17
  5. Step 5: Solve for x
    x = 9,479,594,484.17/121,979.52
  6. Step 6: Final answer
    x = 77,714.64

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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.