Home / 129,331.89-178,462.34-71,957.67

Finding the Fourth Proportional to 129,331.89, 178,462.34 and 71,957.67

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Solution

The fourth proportional to 129,331.89, 178,462.34 and 71,957.67 is: 99,292.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,331.89 : 178,462.34 = 71,957.67 : x
  2. Step 2: Convert to fraction form
    129,331.89/178,462.34 = 71,957.67/x
  3. Step 3: Cross multiply
    129,331.89x = 178,462.34 × 71,957.67
  4. Step 4: Simplify right side
    129,331.89x = 12,841,733,809.36
  5. Step 5: Solve for x
    x = 12,841,733,809.36/129,331.89
  6. Step 6: Final answer
    x = 99,292.86

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1.5x scale

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.