Home / 122,733.87-169,328.85-71,728.47

Finding the Fourth Proportional to 122,733.87, 169,328.85 and 71,728.47

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Solution

The fourth proportional to 122,733.87, 169,328.85 and 71,728.47 is: 98,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,733.87 : 169,328.85 = 71,728.47 : x
  2. Step 2: Convert to fraction form
    122,733.87/169,328.85 = 71,728.47/x
  3. Step 3: Cross multiply
    122,733.87x = 169,328.85 × 71,728.47
  4. Step 4: Simplify right side
    122,733.87x = 12,145,699,337.36
  5. Step 5: Solve for x
    x = 12,145,699,337.36/122,733.87
  6. Step 6: Final answer
    x = 98,959.64

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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.