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Finding the Fourth Proportional to 151,980.45, 209,759.07 and 88,355.16

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Solution

The fourth proportional to 151,980.45, 209,759.07 and 88,355.16 is: 121,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,980.45 : 209,759.07 = 88,355.16 : x
  2. Step 2: Convert to fraction form
    151,980.45/209,759.07 = 88,355.16/x
  3. Step 3: Cross multiply
    151,980.45x = 209,759.07 × 88,355.16
  4. Step 4: Simplify right side
    151,980.45x = 18,533,294,700.73
  5. Step 5: Solve for x
    x = 18,533,294,700.73/151,980.45
  6. Step 6: Final answer
    x = 121,945.25

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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.