Home / 127,738.23-176,270.32-76,720.64

Finding the Fourth Proportional to 127,738.23, 176,270.32 and 76,720.64

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Solution

The fourth proportional to 127,738.23, 176,270.32 and 76,720.64 is: 105,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,738.23 : 176,270.32 = 76,720.64 : x
  2. Step 2: Convert to fraction form
    127,738.23/176,270.32 = 76,720.64/x
  3. Step 3: Cross multiply
    127,738.23x = 176,270.32 × 76,720.64
  4. Step 4: Simplify right side
    127,738.23x = 13,523,572,411.29
  5. Step 5: Solve for x
    x = 13,523,572,411.29/127,738.23
  6. Step 6: Final answer
    x = 105,869.42

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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.