Home / 187,056.28-280,621.02-68,728.60

Finding the Fourth Proportional to 187,056.28, 280,621.02 and 68,728.60

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Solution

The fourth proportional to 187,056.28, 280,621.02 and 68,728.60 is: 103,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,056.28 : 280,621.02 = 68,728.60 : x
  2. Step 2: Convert to fraction form
    187,056.28/280,621.02 = 68,728.60/x
  3. Step 3: Cross multiply
    187,056.28x = 280,621.02 × 68,728.60
  4. Step 4: Simplify right side
    187,056.28x = 19,286,689,835.17
  5. Step 5: Solve for x
    x = 19,286,689,835.17/187,056.28
  6. Step 6: Final answer
    x = 103,106.35

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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.