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Finding the Fourth Proportional to 173,989.60, 260,984.40 and 85,416.10

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Solution

The fourth proportional to 173,989.60, 260,984.40 and 85,416.10 is: 128,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,989.60 : 260,984.40 = 85,416.10 : x
  2. Step 2: Convert to fraction form
    173,989.60/260,984.40 = 85,416.10/x
  3. Step 3: Cross multiply
    173,989.60x = 260,984.40 × 85,416.10
  4. Step 4: Simplify right side
    173,989.60x = 22,292,269,608.84
  5. Step 5: Solve for x
    x = 22,292,269,608.84/173,989.60
  6. Step 6: Final answer
    x = 128,124.15

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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.