Home / 86,731.16-129,363.92-84,106.04

Finding the Fourth Proportional to 86,731.16, 129,363.92 and 84,106.04

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Solution

The fourth proportional to 86,731.16, 129,363.92 and 84,106.04 is: 125,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,731.16 : 129,363.92 = 84,106.04 : x
  2. Step 2: Convert to fraction form
    86,731.16/129,363.92 = 84,106.04/x
  3. Step 3: Cross multiply
    86,731.16x = 129,363.92 × 84,106.04
  4. Step 4: Simplify right side
    86,731.16x = 10,880,287,030.08
  5. Step 5: Solve for x
    x = 10,880,287,030.08/86,731.16
  6. Step 6: Final answer
    x = 125,448.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.