Home / 86,734.16-129,368.39-84,109.04

Finding the Fourth Proportional to 86,734.16, 129,368.39 and 84,109.04

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Solution

The fourth proportional to 86,734.16, 129,368.39 and 84,109.04 is: 125,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,734.16 : 129,368.39 = 84,109.04 : x
  2. Step 2: Convert to fraction form
    86,734.16/129,368.39 = 84,109.04/x
  3. Step 3: Cross multiply
    86,734.16x = 129,368.39 × 84,109.04
  4. Step 4: Simplify right side
    86,734.16x = 10,881,051,089.25
  5. Step 5: Solve for x
    x = 10,881,051,089.25/86,734.16
  6. Step 6: Final answer
    x = 125,452.89

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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.