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Finding the Fourth Proportional to 144,181.10, 216,271.65 and 85,132.10

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Solution

The fourth proportional to 144,181.10, 216,271.65 and 85,132.10 is: 127,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,181.10 : 216,271.65 = 85,132.10 : x
  2. Step 2: Convert to fraction form
    144,181.10/216,271.65 = 85,132.10/x
  3. Step 3: Cross multiply
    144,181.10x = 216,271.65 × 85,132.10
  4. Step 4: Simplify right side
    144,181.10x = 18,411,659,734.97
  5. Step 5: Solve for x
    x = 18,411,659,734.97/144,181.10
  6. Step 6: Final answer
    x = 127,698.15

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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.