Home / 187,430.40-280,834.56-131,909.76

Finding the Fourth Proportional to 187,430.40, 280,834.56 and 131,909.76

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Solution

The fourth proportional to 187,430.40, 280,834.56 and 131,909.76 is: 197,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,430.40 : 280,834.56 = 131,909.76 : x
  2. Step 2: Convert to fraction form
    187,430.40/280,834.56 = 131,909.76/x
  3. Step 3: Cross multiply
    187,430.40x = 280,834.56 × 131,909.76
  4. Step 4: Simplify right side
    187,430.40x = 37,044,819,409.31
  5. Step 5: Solve for x
    x = 37,044,819,409.31/187,430.40
  6. Step 6: Final answer
    x = 197,645.74

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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.