Home / 127,501.74-191,077.65-80,670.78

Finding the Fourth Proportional to 127,501.74, 191,077.65 and 80,670.78

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Solution

The fourth proportional to 127,501.74, 191,077.65 and 80,670.78 is: 120,895.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,501.74 : 191,077.65 = 80,670.78 : x
  2. Step 2: Convert to fraction form
    127,501.74/191,077.65 = 80,670.78/x
  3. Step 3: Cross multiply
    127,501.74x = 191,077.65 × 80,670.78
  4. Step 4: Simplify right side
    127,501.74x = 15,414,383,066.07
  5. Step 5: Solve for x
    x = 15,414,383,066.07/127,501.74
  6. Step 6: Final answer
    x = 120,895.47

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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.