Home / 151,761.07-209,430.59-83,778.14

Finding the Fourth Proportional to 151,761.07, 209,430.59 and 83,778.14

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Solution

The fourth proportional to 151,761.07, 209,430.59 and 83,778.14 is: 115,614.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,761.07 : 209,430.59 = 83,778.14 : x
  2. Step 2: Convert to fraction form
    151,761.07/209,430.59 = 83,778.14/x
  3. Step 3: Cross multiply
    151,761.07x = 209,430.59 × 83,778.14
  4. Step 4: Simplify right side
    151,761.07x = 17,545,706,012.52
  5. Step 5: Solve for x
    x = 17,545,706,012.52/151,761.07
  6. Step 6: Final answer
    x = 115,614.01

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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.