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Finding the Fourth Proportional to 163,627.70, 245,441.55 and 80,683.70

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Solution

The fourth proportional to 163,627.70, 245,441.55 and 80,683.70 is: 121,025.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,627.70 : 245,441.55 = 80,683.70 : x
  2. Step 2: Convert to fraction form
    163,627.70/245,441.55 = 80,683.70/x
  3. Step 3: Cross multiply
    163,627.70x = 245,441.55 × 80,683.70
  4. Step 4: Simplify right side
    163,627.70x = 19,803,132,387.74
  5. Step 5: Solve for x
    x = 19,803,132,387.74/163,627.70
  6. Step 6: Final answer
    x = 121,025.55

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1.5x scale

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.