Home / 129,056.51-178,092.21-71,699.52

Finding the Fourth Proportional to 129,056.51, 178,092.21 and 71,699.52

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Solution

The fourth proportional to 129,056.51, 178,092.21 and 71,699.52 is: 98,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,056.51 : 178,092.21 = 71,699.52 : x
  2. Step 2: Convert to fraction form
    129,056.51/178,092.21 = 71,699.52/x
  3. Step 3: Cross multiply
    129,056.51x = 178,092.21 × 71,699.52
  4. Step 4: Simplify right side
    129,056.51x = 12,769,126,909.46
  5. Step 5: Solve for x
    x = 12,769,126,909.46/129,056.51
  6. Step 6: Final answer
    x = 98,942.14

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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.