Home / 128,076.24-176,755.20-71,496.12

Finding the Fourth Proportional to 128,076.24, 176,755.20 and 71,496.12

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Solution

The fourth proportional to 128,076.24, 176,755.20 and 71,496.12 is: 98,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,076.24 : 176,755.20 = 71,496.12 : x
  2. Step 2: Convert to fraction form
    128,076.24/176,755.20 = 71,496.12/x
  3. Step 3: Cross multiply
    128,076.24x = 176,755.20 × 71,496.12
  4. Step 4: Simplify right side
    128,076.24x = 12,637,310,989.82
  5. Step 5: Solve for x
    x = 12,637,310,989.82/128,076.24
  6. Step 6: Final answer
    x = 98,670.22

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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.