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Finding the Fourth Proportional to 124,003.60, 186,005.40 and 45,120.40

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Solution

The fourth proportional to 124,003.60, 186,005.40 and 45,120.40 is: 67,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,003.60 : 186,005.40 = 45,120.40 : x
  2. Step 2: Convert to fraction form
    124,003.60/186,005.40 = 45,120.40/x
  3. Step 3: Cross multiply
    124,003.60x = 186,005.40 × 45,120.40
  4. Step 4: Simplify right side
    124,003.60x = 8,392,638,050.16
  5. Step 5: Solve for x
    x = 8,392,638,050.16/124,003.60
  6. Step 6: Final answer
    x = 67,680.60

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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.