Home / 161,856.90-242,785.35-105,869.70

Finding the Fourth Proportional to 161,856.90, 242,785.35 and 105,869.70

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Solution

The fourth proportional to 161,856.90, 242,785.35 and 105,869.70 is: 158,804.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,856.90 : 242,785.35 = 105,869.70 : x
  2. Step 2: Convert to fraction form
    161,856.90/242,785.35 = 105,869.70/x
  3. Step 3: Cross multiply
    161,856.90x = 242,785.35 × 105,869.70
  4. Step 4: Simplify right side
    161,856.90x = 25,703,612,168.90
  5. Step 5: Solve for x
    x = 25,703,612,168.90/161,856.90
  6. Step 6: Final answer
    x = 158,804.55

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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.