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Finding the Fourth Proportional to 185,420.60, 278,130.90 and 101,148.20

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Solution

The fourth proportional to 185,420.60, 278,130.90 and 101,148.20 is: 151,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,420.60 : 278,130.90 = 101,148.20 : x
  2. Step 2: Convert to fraction form
    185,420.60/278,130.90 = 101,148.20/x
  3. Step 3: Cross multiply
    185,420.60x = 278,130.90 × 101,148.20
  4. Step 4: Simplify right side
    185,420.60x = 28,132,439,899.38
  5. Step 5: Solve for x
    x = 28,132,439,899.38/185,420.60
  6. Step 6: Final answer
    x = 151,722.30

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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.