Home / 155,895.18-215,134-84,274.57

Finding the Fourth Proportional to 155,895.18, 215,134 and 84,274.57

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Solution

The fourth proportional to 155,895.18, 215,134 and 84,274.57 is: 116,298.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,895.18 : 215,134 = 84,274.57 : x
  2. Step 2: Convert to fraction form
    155,895.18/215,134 = 84,274.57/x
  3. Step 3: Cross multiply
    155,895.18x = 215,134 × 84,274.57
  4. Step 4: Simplify right side
    155,895.18x = 18,130,325,342.38
  5. Step 5: Solve for x
    x = 18,130,325,342.38/155,895.18
  6. Step 6: Final answer
    x = 116,298.18

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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.