Home / 131,781.81-181,858.07-71,352.26

Finding the Fourth Proportional to 131,781.81, 181,858.07 and 71,352.26

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Solution

The fourth proportional to 131,781.81, 181,858.07 and 71,352.26 is: 98,465.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,781.81 : 181,858.07 = 71,352.26 : x
  2. Step 2: Convert to fraction form
    131,781.81/181,858.07 = 71,352.26/x
  3. Step 3: Cross multiply
    131,781.81x = 181,858.07 × 71,352.26
  4. Step 4: Simplify right side
    131,781.81x = 12,975,984,866.39
  5. Step 5: Solve for x
    x = 12,975,984,866.39/131,781.81
  6. Step 6: Final answer
    x = 98,465.68

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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.