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Finding the Fourth Proportional to 122,533.60, 169,143.12 and 119,162.88

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Solution

The fourth proportional to 122,533.60, 169,143.12 and 119,162.88 is: 164,490.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,533.60 : 169,143.12 = 119,162.88 : x
  2. Step 2: Convert to fraction form
    122,533.60/169,143.12 = 119,162.88/x
  3. Step 3: Cross multiply
    122,533.60x = 169,143.12 × 119,162.88
  4. Step 4: Simplify right side
    122,533.60x = 20,155,581,311.39
  5. Step 5: Solve for x
    x = 20,155,581,311.39/122,533.60
  6. Step 6: Final answer
    x = 164,490.24

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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.