Home / 140,117.10-209,944.80-80,849.40

Finding the Fourth Proportional to 140,117.10, 209,944.80 and 80,849.40

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Solution

The fourth proportional to 140,117.10, 209,944.80 and 80,849.40 is: 121,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,117.10 : 209,944.80 = 80,849.40 : x
  2. Step 2: Convert to fraction form
    140,117.10/209,944.80 = 80,849.40/x
  3. Step 3: Cross multiply
    140,117.10x = 209,944.80 × 80,849.40
  4. Step 4: Simplify right side
    140,117.10x = 16,973,911,113.12
  5. Step 5: Solve for x
    x = 16,973,911,113.12/140,117.10
  6. Step 6: Final answer
    x = 121,140.90

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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.