Home / 209,352.92-288,909.12-113,861.72

Finding the Fourth Proportional to 209,352.92, 288,909.12 and 113,861.72

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Solution

The fourth proportional to 209,352.92, 288,909.12 and 113,861.72 is: 157,130.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,352.92 : 288,909.12 = 113,861.72 : x
  2. Step 2: Convert to fraction form
    209,352.92/288,909.12 = 113,861.72/x
  3. Step 3: Cross multiply
    209,352.92x = 288,909.12 × 113,861.72
  4. Step 4: Simplify right side
    209,352.92x = 32,895,689,326.89
  5. Step 5: Solve for x
    x = 32,895,689,326.89/209,352.92
  6. Step 6: Final answer
    x = 157,130.31

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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.