Home / 138,725.95-191,441.32-75,063.46

Finding the Fourth Proportional to 138,725.95, 191,441.32 and 75,063.46

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Solution

The fourth proportional to 138,725.95, 191,441.32 and 75,063.46 is: 103,587.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,725.95 : 191,441.32 = 75,063.46 : x
  2. Step 2: Convert to fraction form
    138,725.95/191,441.32 = 75,063.46/x
  3. Step 3: Cross multiply
    138,725.95x = 191,441.32 × 75,063.46
  4. Step 4: Simplify right side
    138,725.95x = 14,370,247,866.17
  5. Step 5: Solve for x
    x = 14,370,247,866.17/138,725.95
  6. Step 6: Final answer
    x = 103,587.31

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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.