Home / 158,541.08-218,781.95-86,918.65

Finding the Fourth Proportional to 158,541.08, 218,781.95 and 86,918.65

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Solution

The fourth proportional to 158,541.08, 218,781.95 and 86,918.65 is: 119,945.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,541.08 : 218,781.95 = 86,918.65 : x
  2. Step 2: Convert to fraction form
    158,541.08/218,781.95 = 86,918.65/x
  3. Step 3: Cross multiply
    158,541.08x = 218,781.95 × 86,918.65
  4. Step 4: Simplify right side
    158,541.08x = 19,016,230,756.82
  5. Step 5: Solve for x
    x = 19,016,230,756.82/158,541.08
  6. Step 6: Final answer
    x = 119,945.14

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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.