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Finding the Fourth Proportional to 121,737.10, 182,605.65 and 79,746.70

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Solution

The fourth proportional to 121,737.10, 182,605.65 and 79,746.70 is: 119,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,737.10 : 182,605.65 = 79,746.70 : x
  2. Step 2: Convert to fraction form
    121,737.10/182,605.65 = 79,746.70/x
  3. Step 3: Cross multiply
    121,737.10x = 182,605.65 × 79,746.70
  4. Step 4: Simplify right side
    121,737.10x = 14,562,197,988.86
  5. Step 5: Solve for x
    x = 14,562,197,988.86/121,737.10
  6. Step 6: Final answer
    x = 119,620.05

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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.