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Finding the Fourth Proportional to 122,373.64, 168,898.74 and 79,968.52

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Solution

The fourth proportional to 122,373.64, 168,898.74 and 79,968.52 is: 110,371.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,373.64 : 168,898.74 = 79,968.52 : x
  2. Step 2: Convert to fraction form
    122,373.64/168,898.74 = 79,968.52/x
  3. Step 3: Cross multiply
    122,373.64x = 168,898.74 × 79,968.52
  4. Step 4: Simplify right side
    122,373.64x = 13,506,582,267.66
  5. Step 5: Solve for x
    x = 13,506,582,267.66/122,373.64
  6. Step 6: Final answer
    x = 110,371.66

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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.