Home / 100,568.18-138,848.55-89,794.46

Finding the Fourth Proportional to 100,568.18, 138,848.55 and 89,794.46

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Solution

The fourth proportional to 100,568.18, 138,848.55 and 89,794.46 is: 123,973.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,568.18 : 138,848.55 = 89,794.46 : x
  2. Step 2: Convert to fraction form
    100,568.18/138,848.55 = 89,794.46/x
  3. Step 3: Cross multiply
    100,568.18x = 138,848.55 × 89,794.46
  4. Step 4: Simplify right side
    100,568.18x = 12,467,830,569.03
  5. Step 5: Solve for x
    x = 12,467,830,569.03/100,568.18
  6. Step 6: Final answer
    x = 123,973.91

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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.