Home / 145,906.13-201,350.40-78,838.13

Finding the Fourth Proportional to 145,906.13, 201,350.40 and 78,838.13

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Solution

The fourth proportional to 145,906.13, 201,350.40 and 78,838.13 is: 108,796.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,906.13 : 201,350.40 = 78,838.13 : x
  2. Step 2: Convert to fraction form
    145,906.13/201,350.40 = 78,838.13/x
  3. Step 3: Cross multiply
    145,906.13x = 201,350.40 × 78,838.13
  4. Step 4: Simplify right side
    145,906.13x = 15,874,089,010.75
  5. Step 5: Solve for x
    x = 15,874,089,010.75/145,906.13
  6. Step 6: Final answer
    x = 108,796.59

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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.