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Finding the Fourth Proportional to 140,626.30, 210,939.45 and 42,130.30

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Solution

The fourth proportional to 140,626.30, 210,939.45 and 42,130.30 is: 63,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,626.30 : 210,939.45 = 42,130.30 : x
  2. Step 2: Convert to fraction form
    140,626.30/210,939.45 = 42,130.30/x
  3. Step 3: Cross multiply
    140,626.30x = 210,939.45 × 42,130.30
  4. Step 4: Simplify right side
    140,626.30x = 8,886,942,310.34
  5. Step 5: Solve for x
    x = 8,886,942,310.34/140,626.30
  6. Step 6: Final answer
    x = 63,195.45

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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.