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Finding the Fourth Proportional to 122,117.60, 182,787.60 and 87,125.60

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Solution

The fourth proportional to 122,117.60, 182,787.60 and 87,125.60 is: 130,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,117.60 : 182,787.60 = 87,125.60 : x
  2. Step 2: Convert to fraction form
    122,117.60/182,787.60 = 87,125.60/x
  3. Step 3: Cross multiply
    122,117.60x = 182,787.60 × 87,125.60
  4. Step 4: Simplify right side
    122,117.60x = 15,925,479,322.56
  5. Step 5: Solve for x
    x = 15,925,479,322.56/122,117.60
  6. Step 6: Final answer
    x = 130,411.01

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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.