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Finding the Fourth Proportional to 173,724.40, 260,440.80 and 90,618.40

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Solution

The fourth proportional to 173,724.40, 260,440.80 and 90,618.40 is: 135,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,724.40 : 260,440.80 = 90,618.40 : x
  2. Step 2: Convert to fraction form
    173,724.40/260,440.80 = 90,618.40/x
  3. Step 3: Cross multiply
    173,724.40x = 260,440.80 × 90,618.40
  4. Step 4: Simplify right side
    173,724.40x = 23,600,728,590.72
  5. Step 5: Solve for x
    x = 23,600,728,590.72/173,724.40
  6. Step 6: Final answer
    x = 135,851.55

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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.