Home / 92,212.70-138,319.05-86,672.30

Finding the Fourth Proportional to 92,212.70, 138,319.05 and 86,672.30

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Solution

The fourth proportional to 92,212.70, 138,319.05 and 86,672.30 is: 130,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,212.70 : 138,319.05 = 86,672.30 : x
  2. Step 2: Convert to fraction form
    92,212.70/138,319.05 = 86,672.30/x
  3. Step 3: Cross multiply
    92,212.70x = 138,319.05 × 86,672.30
  4. Step 4: Simplify right side
    92,212.70x = 11,988,430,197.32
  5. Step 5: Solve for x
    x = 11,988,430,197.32/92,212.70
  6. Step 6: Final answer
    x = 130,008.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.