Home / 91,631.60-126,512.56-70,372.88

Finding the Fourth Proportional to 91,631.60, 126,512.56 and 70,372.88

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Solution

The fourth proportional to 91,631.60, 126,512.56 and 70,372.88 is: 97,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,631.60 : 126,512.56 = 70,372.88 : x
  2. Step 2: Convert to fraction form
    91,631.60/126,512.56 = 70,372.88/x
  3. Step 3: Cross multiply
    91,631.60x = 126,512.56 × 70,372.88
  4. Step 4: Simplify right side
    91,631.60x = 8,903,053,203.37
  5. Step 5: Solve for x
    x = 8,903,053,203.37/91,631.60
  6. Step 6: Final answer
    x = 97,161.39

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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.