Home / 151,739.71-209,400.81-83,756.70

Finding the Fourth Proportional to 151,739.71, 209,400.81 and 83,756.70

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Solution

The fourth proportional to 151,739.71, 209,400.81 and 83,756.70 is: 115,584.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,739.71 : 209,400.81 = 83,756.70 : x
  2. Step 2: Convert to fraction form
    151,739.71/209,400.81 = 83,756.70/x
  3. Step 3: Cross multiply
    151,739.71x = 209,400.81 × 83,756.70
  4. Step 4: Simplify right side
    151,739.71x = 17,538,720,822.93
  5. Step 5: Solve for x
    x = 17,538,720,822.93/151,739.71
  6. Step 6: Final answer
    x = 115,584.25

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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.