Home / 155,892.18-215,129.86-84,271.57

Finding the Fourth Proportional to 155,892.18, 215,129.86 and 84,271.57

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Solution

The fourth proportional to 155,892.18, 215,129.86 and 84,271.57 is: 116,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,892.18 : 215,129.86 = 84,271.57 : x
  2. Step 2: Convert to fraction form
    155,892.18/215,129.86 = 84,271.57/x
  3. Step 3: Cross multiply
    155,892.18x = 215,129.86 × 84,271.57
  4. Step 4: Simplify right side
    155,892.18x = 18,129,331,056.08
  5. Step 5: Solve for x
    x = 18,129,331,056.08/155,892.18
  6. Step 6: Final answer
    x = 116,294.04

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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.