Home / 126,426.60-189,712.80-47,597.40

Finding the Fourth Proportional to 126,426.60, 189,712.80 and 47,597.40

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Solution

The fourth proportional to 126,426.60, 189,712.80 and 47,597.40 is: 71,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,426.60 : 189,712.80 = 47,597.40 : x
  2. Step 2: Convert to fraction form
    126,426.60/189,712.80 = 47,597.40/x
  3. Step 3: Cross multiply
    126,426.60x = 189,712.80 × 47,597.40
  4. Step 4: Simplify right side
    126,426.60x = 9,029,836,026.72
  5. Step 5: Solve for x
    x = 9,029,836,026.72/126,426.60
  6. Step 6: Final answer
    x = 71,423.55

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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.