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Finding the Fourth Proportional to 172,029.06, 257,581.08 and 140,308.25

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Solution

The fourth proportional to 172,029.06, 257,581.08 and 140,308.25 is: 210,085.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,029.06 : 257,581.08 = 140,308.25 : x
  2. Step 2: Convert to fraction form
    172,029.06/257,581.08 = 140,308.25/x
  3. Step 3: Cross multiply
    172,029.06x = 257,581.08 × 140,308.25
  4. Step 4: Simplify right side
    172,029.06x = 36,140,749,280.00
  5. Step 5: Solve for x
    x = 36,140,749,280.00/172,029.06
  6. Step 6: Final answer
    x = 210,085.14

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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.