Home / 128,536.18-177,381.77-74,058.30

Finding the Fourth Proportional to 128,536.18, 177,381.77 and 74,058.30

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Solution

The fourth proportional to 128,536.18, 177,381.77 and 74,058.30 is: 102,201.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,536.18 : 177,381.77 = 74,058.30 : x
  2. Step 2: Convert to fraction form
    128,536.18/177,381.77 = 74,058.30/x
  3. Step 3: Cross multiply
    128,536.18x = 177,381.77 × 74,058.30
  4. Step 4: Simplify right side
    128,536.18x = 13,136,591,966.90
  5. Step 5: Solve for x
    x = 13,136,591,966.90/128,536.18
  6. Step 6: Final answer
    x = 102,201.51

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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.