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Finding the Fourth Proportional to 122,371, 168,967.55 and 79,370.93

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Solution

The fourth proportional to 122,371, 168,967.55 and 79,370.93 is: 109,593.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,371 : 168,967.55 = 79,370.93 : x
  2. Step 2: Convert to fraction form
    122,371/168,967.55 = 79,370.93/x
  3. Step 3: Cross multiply
    122,371x = 168,967.55 × 79,370.93
  4. Step 4: Simplify right side
    122,371x = 13,411,111,583.32
  5. Step 5: Solve for x
    x = 13,411,111,583.32/122,371
  6. Step 6: Final answer
    x = 109,593.87

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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.