Home / 91,167.08-136,721.05-30,361.16

Finding the Fourth Proportional to 91,167.08, 136,721.05 and 30,361.16

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Solution

The fourth proportional to 91,167.08, 136,721.05 and 30,361.16 is: 45,531.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,167.08 : 136,721.05 = 30,361.16 : x
  2. Step 2: Convert to fraction form
    91,167.08/136,721.05 = 30,361.16/x
  3. Step 3: Cross multiply
    91,167.08x = 136,721.05 × 30,361.16
  4. Step 4: Simplify right side
    91,167.08x = 4,151,009,155.13
  5. Step 5: Solve for x
    x = 4,151,009,155.13/91,167.08
  6. Step 6: Final answer
    x = 45,531.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.