Home / 111,948.13-154,372.30-86,458.65

Finding the Fourth Proportional to 111,948.13, 154,372.30 and 86,458.65

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Solution

The fourth proportional to 111,948.13, 154,372.30 and 86,458.65 is: 119,223.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,948.13 : 154,372.30 = 86,458.65 : x
  2. Step 2: Convert to fraction form
    111,948.13/154,372.30 = 86,458.65/x
  3. Step 3: Cross multiply
    111,948.13x = 154,372.30 × 86,458.65
  4. Step 4: Simplify right side
    111,948.13x = 13,346,820,655.40
  5. Step 5: Solve for x
    x = 13,346,820,655.40/111,948.13
  6. Step 6: Final answer
    x = 119,223.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.