Home / 86,275.65-129,402.45-64,121.34

Finding the Fourth Proportional to 86,275.65, 129,402.45 and 64,121.34

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Solution

The fourth proportional to 86,275.65, 129,402.45 and 64,121.34 is: 96,173.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,275.65 : 129,402.45 = 64,121.34 : x
  2. Step 2: Convert to fraction form
    86,275.65/129,402.45 = 64,121.34/x
  3. Step 3: Cross multiply
    86,275.65x = 129,402.45 × 64,121.34
  4. Step 4: Simplify right side
    86,275.65x = 8,297,458,493.28
  5. Step 5: Solve for x
    x = 8,297,458,493.28/86,275.65
  6. Step 6: Final answer
    x = 96,173.82

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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.