Home / 100,856.10-151,284.15-89,969.70

Finding the Fourth Proportional to 100,856.10, 151,284.15 and 89,969.70

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Solution

The fourth proportional to 100,856.10, 151,284.15 and 89,969.70 is: 134,954.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,856.10 : 151,284.15 = 89,969.70 : x
  2. Step 2: Convert to fraction form
    100,856.10/151,284.15 = 89,969.70/x
  3. Step 3: Cross multiply
    100,856.10x = 151,284.15 × 89,969.70
  4. Step 4: Simplify right side
    100,856.10x = 13,610,989,590.26
  5. Step 5: Solve for x
    x = 13,610,989,590.26/100,856.10
  6. Step 6: Final answer
    x = 134,954.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.