Home / 151,821.12-209,512.08-83,842.32

Finding the Fourth Proportional to 151,821.12, 209,512.08 and 83,842.32

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Solution

The fourth proportional to 151,821.12, 209,512.08 and 83,842.32 is: 115,701.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,821.12 : 209,512.08 = 83,842.32 : x
  2. Step 2: Convert to fraction form
    151,821.12/209,512.08 = 83,842.32/x
  3. Step 3: Cross multiply
    151,821.12x = 209,512.08 × 83,842.32
  4. Step 4: Simplify right side
    151,821.12x = 17,565,978,855.23
  5. Step 5: Solve for x
    x = 17,565,978,855.23/151,821.12
  6. Step 6: Final answer
    x = 115,701.81

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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.