Home / 165,197.10-247,139.55-143,254.20

Finding the Fourth Proportional to 165,197.10, 247,139.55 and 143,254.20

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Solution

The fourth proportional to 165,197.10, 247,139.55 and 143,254.20 is: 214,312.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,197.10 : 247,139.55 = 143,254.20 : x
  2. Step 2: Convert to fraction form
    165,197.10/247,139.55 = 143,254.20/x
  3. Step 3: Cross multiply
    165,197.10x = 247,139.55 × 143,254.20
  4. Step 4: Simplify right side
    165,197.10x = 35,403,778,523.61
  5. Step 5: Solve for x
    x = 35,403,778,523.61/165,197.10
  6. Step 6: Final answer
    x = 214,312.35

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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.