Home / 129,030.88-178,056.54-71,673.90

Finding the Fourth Proportional to 129,030.88, 178,056.54 and 71,673.90

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Solution

The fourth proportional to 129,030.88, 178,056.54 and 71,673.90 is: 98,906.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,030.88 : 178,056.54 = 71,673.90 : x
  2. Step 2: Convert to fraction form
    129,030.88/178,056.54 = 71,673.90/x
  3. Step 3: Cross multiply
    129,030.88x = 178,056.54 × 71,673.90
  4. Step 4: Simplify right side
    129,030.88x = 12,762,006,642.31
  5. Step 5: Solve for x
    x = 12,762,006,642.31/129,030.88
  6. Step 6: Final answer
    x = 98,906.61

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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.