Home / 102,979.10-142,123.13-62,716.46

Finding the Fourth Proportional to 102,979.10, 142,123.13 and 62,716.46

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Solution

The fourth proportional to 102,979.10, 142,123.13 and 62,716.46 is: 86,556.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,979.10 : 142,123.13 = 62,716.46 : x
  2. Step 2: Convert to fraction form
    102,979.10/142,123.13 = 62,716.46/x
  3. Step 3: Cross multiply
    102,979.10x = 142,123.13 × 62,716.46
  4. Step 4: Simplify right side
    102,979.10x = 8,913,459,597.72
  5. Step 5: Solve for x
    x = 8,913,459,597.72/102,979.10
  6. Step 6: Final answer
    x = 86,556.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.