Home / 127,688.91-176,216.16-71,100.28

Finding the Fourth Proportional to 127,688.91, 176,216.16 and 71,100.28

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Solution

The fourth proportional to 127,688.91, 176,216.16 and 71,100.28 is: 98,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,688.91 : 176,216.16 = 71,100.28 : x
  2. Step 2: Convert to fraction form
    127,688.91/176,216.16 = 71,100.28/x
  3. Step 3: Cross multiply
    127,688.91x = 176,216.16 × 71,100.28
  4. Step 4: Simplify right side
    127,688.91x = 12,529,018,403.48
  5. Step 5: Solve for x
    x = 12,529,018,403.48/127,688.91
  6. Step 6: Final answer
    x = 98,121.43

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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.