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Finding the Fourth Proportional to 124,880.40, 187,320.60 and 86,826.60

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Solution

The fourth proportional to 124,880.40, 187,320.60 and 86,826.60 is: 130,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,880.40 : 187,320.60 = 86,826.60 : x
  2. Step 2: Convert to fraction form
    124,880.40/187,320.60 = 86,826.60/x
  3. Step 3: Cross multiply
    124,880.40x = 187,320.60 × 86,826.60
  4. Step 4: Simplify right side
    124,880.40x = 16,264,410,807.96
  5. Step 5: Solve for x
    x = 16,264,410,807.96/124,880.40
  6. Step 6: Final answer
    x = 130,239.90

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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.