Home / 93,719.12-139,979.28-84,820.88

Finding the Fourth Proportional to 93,719.12, 139,979.28 and 84,820.88

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Solution

The fourth proportional to 93,719.12, 139,979.28 and 84,820.88 is: 126,688.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,719.12 : 139,979.28 = 84,820.88 : x
  2. Step 2: Convert to fraction form
    93,719.12/139,979.28 = 84,820.88/x
  3. Step 3: Cross multiply
    93,719.12x = 139,979.28 × 84,820.88
  4. Step 4: Simplify right side
    93,719.12x = 11,873,165,711.37
  5. Step 5: Solve for x
    x = 11,873,165,711.37/93,719.12
  6. Step 6: Final answer
    x = 126,688.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.