Home / 134,943.11-186,220.28-74,512.45

Finding the Fourth Proportional to 134,943.11, 186,220.28 and 74,512.45

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Solution

The fourth proportional to 134,943.11, 186,220.28 and 74,512.45 is: 102,826.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,943.11 : 186,220.28 = 74,512.45 : x
  2. Step 2: Convert to fraction form
    134,943.11/186,220.28 = 74,512.45/x
  3. Step 3: Cross multiply
    134,943.11x = 186,220.28 × 74,512.45
  4. Step 4: Simplify right side
    134,943.11x = 13,875,729,721.54
  5. Step 5: Solve for x
    x = 13,875,729,721.54/134,943.11
  6. Step 6: Final answer
    x = 102,826.52

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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.