Home / 127,501.20-191,251.80-76,762.80

Finding the Fourth Proportional to 127,501.20, 191,251.80 and 76,762.80

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Solution

The fourth proportional to 127,501.20, 191,251.80 and 76,762.80 is: 115,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,501.20 : 191,251.80 = 76,762.80 : x
  2. Step 2: Convert to fraction form
    127,501.20/191,251.80 = 76,762.80/x
  3. Step 3: Cross multiply
    127,501.20x = 191,251.80 × 76,762.80
  4. Step 4: Simplify right side
    127,501.20x = 14,681,023,673.04
  5. Step 5: Solve for x
    x = 14,681,023,673.04/127,501.20
  6. Step 6: Final answer
    x = 115,144.20

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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.