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Finding the Fourth Proportional to 122,116.60, 168,518.40 and 67,663.48

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Solution

The fourth proportional to 122,116.60, 168,518.40 and 67,663.48 is: 93,374.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,116.60 : 168,518.40 = 67,663.48 : x
  2. Step 2: Convert to fraction form
    122,116.60/168,518.40 = 67,663.48/x
  3. Step 3: Cross multiply
    122,116.60x = 168,518.40 × 67,663.48
  4. Step 4: Simplify right side
    122,116.60x = 11,402,541,388.03
  5. Step 5: Solve for x
    x = 11,402,541,388.03/122,116.60
  6. Step 6: Final answer
    x = 93,374.21

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1.5x scale

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.