Home / 131,765.81-181,835.55-71,334.90

Finding the Fourth Proportional to 131,765.81, 181,835.55 and 71,334.90

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Solution

The fourth proportional to 131,765.81, 181,835.55 and 71,334.90 is: 98,441.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,765.81 : 181,835.55 = 71,334.90 : x
  2. Step 2: Convert to fraction form
    131,765.81/181,835.55 = 71,334.90/x
  3. Step 3: Cross multiply
    131,765.81x = 181,835.55 × 71,334.90
  4. Step 4: Simplify right side
    131,765.81x = 12,971,220,775.70
  5. Step 5: Solve for x
    x = 12,971,220,775.70/131,765.81
  6. Step 6: Final answer
    x = 98,441.48

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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.