Home / 145,020.06-200,135.19-81,354.30

Finding the Fourth Proportional to 145,020.06, 200,135.19 and 81,354.30

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Solution

The fourth proportional to 145,020.06, 200,135.19 and 81,354.30 is: 112,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,020.06 : 200,135.19 = 81,354.30 : x
  2. Step 2: Convert to fraction form
    145,020.06/200,135.19 = 81,354.30/x
  3. Step 3: Cross multiply
    145,020.06x = 200,135.19 × 81,354.30
  4. Step 4: Simplify right side
    145,020.06x = 16,281,858,287.82
  5. Step 5: Solve for x
    x = 16,281,858,287.82/145,020.06
  6. Step 6: Final answer
    x = 112,273.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.