Home / 209,723.40-289,431.90-124,828.92

Finding the Fourth Proportional to 209,723.40, 289,431.90 and 124,828.92

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Solution

The fourth proportional to 209,723.40, 289,431.90 and 124,828.92 is: 172,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,723.40 : 289,431.90 = 124,828.92 : x
  2. Step 2: Convert to fraction form
    209,723.40/289,431.90 = 124,828.92/x
  3. Step 3: Cross multiply
    209,723.40x = 289,431.90 × 124,828.92
  4. Step 4: Simplify right side
    209,723.40x = 36,129,471,490.55
  5. Step 5: Solve for x
    x = 36,129,471,490.55/209,723.40
  6. Step 6: Final answer
    x = 172,272.01

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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.