Home / 113,632.48-156,720.81-99,991.07

Finding the Fourth Proportional to 113,632.48, 156,720.81 and 99,991.07

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Solution

The fourth proportional to 113,632.48, 156,720.81 and 99,991.07 is: 137,906.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,632.48 : 156,720.81 = 99,991.07 : x
  2. Step 2: Convert to fraction form
    113,632.48/156,720.81 = 99,991.07/x
  3. Step 3: Cross multiply
    113,632.48x = 156,720.81 × 99,991.07
  4. Step 4: Simplify right side
    113,632.48x = 15,670,681,483.17
  5. Step 5: Solve for x
    x = 15,670,681,483.17/113,632.48
  6. Step 6: Final answer
    x = 137,906.71

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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.