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Finding the Fourth Proportional to 121,657.80, 182,486.70 and 112,800.45

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Solution

The fourth proportional to 121,657.80, 182,486.70 and 112,800.45 is: 169,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,657.80 : 182,486.70 = 112,800.45 : x
  2. Step 2: Convert to fraction form
    121,657.80/182,486.70 = 112,800.45/x
  3. Step 3: Cross multiply
    121,657.80x = 182,486.70 × 112,800.45
  4. Step 4: Simplify right side
    121,657.80x = 20,584,581,879.02
  5. Step 5: Solve for x
    x = 20,584,581,879.02/121,657.80
  6. Step 6: Final answer
    x = 169,200.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.