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Finding the Fourth Proportional to 145,275.62, 200,485.51 and 80,746.16

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Solution

The fourth proportional to 145,275.62, 200,485.51 and 80,746.16 is: 111,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,275.62 : 200,485.51 = 80,746.16 : x
  2. Step 2: Convert to fraction form
    145,275.62/200,485.51 = 80,746.16/x
  3. Step 3: Cross multiply
    145,275.62x = 200,485.51 × 80,746.16
  4. Step 4: Simplify right side
    145,275.62x = 16,188,433,863.85
  5. Step 5: Solve for x
    x = 16,188,433,863.85/145,275.62
  6. Step 6: Final answer
    x = 111,432.56

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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.