Home / 86,839.80-130,065.30-67,054.20

Finding the Fourth Proportional to 86,839.80, 130,065.30 and 67,054.20

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Solution

The fourth proportional to 86,839.80, 130,065.30 and 67,054.20 is: 100,431.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,839.80 : 130,065.30 = 67,054.20 : x
  2. Step 2: Convert to fraction form
    86,839.80/130,065.30 = 67,054.20/x
  3. Step 3: Cross multiply
    86,839.80x = 130,065.30 × 67,054.20
  4. Step 4: Simplify right side
    86,839.80x = 8,721,424,639.26
  5. Step 5: Solve for x
    x = 8,721,424,639.26/86,839.80
  6. Step 6: Final answer
    x = 100,431.19

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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.