Home / 151,489.08-209,064.30-83,505.72

Finding the Fourth Proportional to 151,489.08, 209,064.30 and 83,505.72

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Solution

The fourth proportional to 151,489.08, 209,064.30 and 83,505.72 is: 115,243.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,489.08 : 209,064.30 = 83,505.72 : x
  2. Step 2: Convert to fraction form
    151,489.08/209,064.30 = 83,505.72/x
  3. Step 3: Cross multiply
    151,489.08x = 209,064.30 × 83,505.72
  4. Step 4: Simplify right side
    151,489.08x = 17,458,064,897.80
  5. Step 5: Solve for x
    x = 17,458,064,897.80/151,489.08
  6. Step 6: Final answer
    x = 115,243.06

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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.