Home / 100,319.19-149,594.60-99,419.82

Finding the Fourth Proportional to 100,319.19, 149,594.60 and 99,419.82

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Solution

The fourth proportional to 100,319.19, 149,594.60 and 99,419.82 is: 148,253.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,319.19 : 149,594.60 = 99,419.82 : x
  2. Step 2: Convert to fraction form
    100,319.19/149,594.60 = 99,419.82/x
  3. Step 3: Cross multiply
    100,319.19x = 149,594.60 × 99,419.82
  4. Step 4: Simplify right side
    100,319.19x = 14,872,668,204.97
  5. Step 5: Solve for x
    x = 14,872,668,204.97/100,319.19
  6. Step 6: Final answer
    x = 148,253.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.