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Finding the Fourth Proportional to 124,671.60, 187,007.40 and 40,431.60

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Solution

The fourth proportional to 124,671.60, 187,007.40 and 40,431.60 is: 60,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,671.60 : 187,007.40 = 40,431.60 : x
  2. Step 2: Convert to fraction form
    124,671.60/187,007.40 = 40,431.60/x
  3. Step 3: Cross multiply
    124,671.60x = 187,007.40 × 40,431.60
  4. Step 4: Simplify right side
    124,671.60x = 7,561,008,393.84
  5. Step 5: Solve for x
    x = 7,561,008,393.84/124,671.60
  6. Step 6: Final answer
    x = 60,647.40

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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.