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Finding the Fourth Proportional to 145,169.70, 217,466.55 and 127,851.30

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Solution

The fourth proportional to 145,169.70, 217,466.55 and 127,851.30 is: 191,523.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,169.70 : 217,466.55 = 127,851.30 : x
  2. Step 2: Convert to fraction form
    145,169.70/217,466.55 = 127,851.30/x
  3. Step 3: Cross multiply
    145,169.70x = 217,466.55 × 127,851.30
  4. Step 4: Simplify right side
    145,169.70x = 27,803,381,124.02
  5. Step 5: Solve for x
    x = 27,803,381,124.02/145,169.70
  6. Step 6: Final answer
    x = 191,523.31

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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.