Home / 129,309.04-178,345.28-88,497.36

Finding the Fourth Proportional to 129,309.04, 178,345.28 and 88,497.36

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Solution

The fourth proportional to 129,309.04, 178,345.28 and 88,497.36 is: 122,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,309.04 : 178,345.28 = 88,497.36 : x
  2. Step 2: Convert to fraction form
    129,309.04/178,345.28 = 88,497.36/x
  3. Step 3: Cross multiply
    129,309.04x = 178,345.28 × 88,497.36
  4. Step 4: Simplify right side
    129,309.04x = 15,783,086,448.46
  5. Step 5: Solve for x
    x = 15,783,086,448.46/129,309.04
  6. Step 6: Final answer
    x = 122,057.10

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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.