Home / 86,145.30-129,023.55-51,153.30

Finding the Fourth Proportional to 86,145.30, 129,023.55 and 51,153.30

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Solution

The fourth proportional to 86,145.30, 129,023.55 and 51,153.30 is: 76,614.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,145.30 : 129,023.55 = 51,153.30 : x
  2. Step 2: Convert to fraction form
    86,145.30/129,023.55 = 51,153.30/x
  3. Step 3: Cross multiply
    86,145.30x = 129,023.55 × 51,153.30
  4. Step 4: Simplify right side
    86,145.30x = 6,599,980,360.22
  5. Step 5: Solve for x
    x = 6,599,980,360.22/86,145.30
  6. Step 6: Final answer
    x = 76,614.51

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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.