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Finding the Fourth Proportional to 122,493.60, 169,030.80 and 68,774.40

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Solution

The fourth proportional to 122,493.60, 169,030.80 and 68,774.40 is: 94,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,493.60 : 169,030.80 = 68,774.40 : x
  2. Step 2: Convert to fraction form
    122,493.60/169,030.80 = 68,774.40/x
  3. Step 3: Cross multiply
    122,493.60x = 169,030.80 × 68,774.40
  4. Step 4: Simplify right side
    122,493.60x = 11,624,991,851.52
  5. Step 5: Solve for x
    x = 11,624,991,851.52/122,493.60
  6. Step 6: Final answer
    x = 94,902.85

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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.