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Finding the Fourth Proportional to 140,100.60, 210,150.90 and 123,479.40

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Solution

The fourth proportional to 140,100.60, 210,150.90 and 123,479.40 is: 185,219.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,100.60 : 210,150.90 = 123,479.40 : x
  2. Step 2: Convert to fraction form
    140,100.60/210,150.90 = 123,479.40/x
  3. Step 3: Cross multiply
    140,100.60x = 210,150.90 × 123,479.40
  4. Step 4: Simplify right side
    140,100.60x = 25,949,307,041.46
  5. Step 5: Solve for x
    x = 25,949,307,041.46/140,100.60
  6. Step 6: Final answer
    x = 185,219.10

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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.