Home / 156,320.24-215,722.91-84,700.78

Finding the Fourth Proportional to 156,320.24, 215,722.91 and 84,700.78

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Solution

The fourth proportional to 156,320.24, 215,722.91 and 84,700.78 is: 116,887.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,320.24 : 215,722.91 = 84,700.78 : x
  2. Step 2: Convert to fraction form
    156,320.24/215,722.91 = 84,700.78/x
  3. Step 3: Cross multiply
    156,320.24x = 215,722.91 × 84,700.78
  4. Step 4: Simplify right side
    156,320.24x = 18,271,898,413.31
  5. Step 5: Solve for x
    x = 18,271,898,413.31/156,320.24
  6. Step 6: Final answer
    x = 116,887.61

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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.