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Finding the Fourth Proportional to 173,640.55, 260,023.43 and 138,648.55

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Solution

The fourth proportional to 173,640.55, 260,023.43 and 138,648.55 is: 207,623.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,640.55 : 260,023.43 = 138,648.55 : x
  2. Step 2: Convert to fraction form
    173,640.55/260,023.43 = 138,648.55/x
  3. Step 3: Cross multiply
    173,640.55x = 260,023.43 × 138,648.55
  4. Step 4: Simplify right side
    173,640.55x = 36,051,870,842.28
  5. Step 5: Solve for x
    x = 36,051,870,842.28/173,640.55
  6. Step 6: Final answer
    x = 207,623.57

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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.