Home / 155,857.02-215,082.18-84,236.82

Finding the Fourth Proportional to 155,857.02, 215,082.18 and 84,236.82

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Solution

The fourth proportional to 155,857.02, 215,082.18 and 84,236.82 is: 116,246.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,857.02 : 215,082.18 = 84,236.82 : x
  2. Step 2: Convert to fraction form
    155,857.02/215,082.18 = 84,236.82/x
  3. Step 3: Cross multiply
    155,857.02x = 215,082.18 × 84,236.82
  4. Step 4: Simplify right side
    155,857.02x = 18,117,838,881.87
  5. Step 5: Solve for x
    x = 18,117,838,881.87/155,857.02
  6. Step 6: Final answer
    x = 116,246.54

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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.