Home / 130,988.96-180,764.76-71,372.96

Finding the Fourth Proportional to 130,988.96, 180,764.76 and 71,372.96

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Solution

The fourth proportional to 130,988.96, 180,764.76 and 71,372.96 is: 98,494.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,988.96 : 180,764.76 = 71,372.96 : x
  2. Step 2: Convert to fraction form
    130,988.96/180,764.76 = 71,372.96/x
  3. Step 3: Cross multiply
    130,988.96x = 180,764.76 × 71,372.96
  4. Step 4: Simplify right side
    130,988.96x = 12,901,715,984.89
  5. Step 5: Solve for x
    x = 12,901,715,984.89/130,988.96
  6. Step 6: Final answer
    x = 98,494.68

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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.