Home / 151,755.20-209,421.03-83,772.20

Finding the Fourth Proportional to 151,755.20, 209,421.03 and 83,772.20

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Solution

The fourth proportional to 151,755.20, 209,421.03 and 83,772.20 is: 115,605.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,755.20 : 209,421.03 = 83,772.20 : x
  2. Step 2: Convert to fraction form
    151,755.20/209,421.03 = 83,772.20/x
  3. Step 3: Cross multiply
    151,755.20x = 209,421.03 × 83,772.20
  4. Step 4: Simplify right side
    151,755.20x = 17,543,660,409.37
  5. Step 5: Solve for x
    x = 17,543,660,409.37/151,755.20
  6. Step 6: Final answer
    x = 115,605.00

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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.