Home / 155,885.18-215,120.81-84,264.57

Finding the Fourth Proportional to 155,885.18, 215,120.81 and 84,264.57

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Solution

The fourth proportional to 155,885.18, 215,120.81 and 84,264.57 is: 116,284.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,885.18 : 215,120.81 = 84,264.57 : x
  2. Step 2: Convert to fraction form
    155,885.18/215,120.81 = 84,264.57/x
  3. Step 3: Cross multiply
    155,885.18x = 215,120.81 × 84,264.57
  4. Step 4: Simplify right side
    155,885.18x = 18,127,062,763.36
  5. Step 5: Solve for x
    x = 18,127,062,763.36/155,885.18
  6. Step 6: Final answer
    x = 116,284.71

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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.