Home / 122,981.22-169,705.53-72,670.50

Finding the Fourth Proportional to 122,981.22, 169,705.53 and 72,670.50

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Solution

The fourth proportional to 122,981.22, 169,705.53 and 72,670.50 is: 100,280.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,981.22 : 169,705.53 = 72,670.50 : x
  2. Step 2: Convert to fraction form
    122,981.22/169,705.53 = 72,670.50/x
  3. Step 3: Cross multiply
    122,981.22x = 169,705.53 × 72,670.50
  4. Step 4: Simplify right side
    122,981.22x = 12,332,585,717.87
  5. Step 5: Solve for x
    x = 12,332,585,717.87/122,981.22
  6. Step 6: Final answer
    x = 100,280.24

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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.