Home / 155,918.69-215,024.33-102,184.19

Finding the Fourth Proportional to 155,918.69, 215,024.33 and 102,184.19

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Solution

The fourth proportional to 155,918.69, 215,024.33 and 102,184.19 is: 140,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,918.69 : 215,024.33 = 102,184.19 : x
  2. Step 2: Convert to fraction form
    155,918.69/215,024.33 = 102,184.19/x
  3. Step 3: Cross multiply
    155,918.69x = 215,024.33 × 102,184.19
  4. Step 4: Simplify right side
    155,918.69x = 21,972,086,480.42
  5. Step 5: Solve for x
    x = 21,972,086,480.42/155,918.69
  6. Step 6: Final answer
    x = 140,920.16

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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.