Home / 91,331.79-136,776.25-63,172.81

Finding the Fourth Proportional to 91,331.79, 136,776.25 and 63,172.81

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Solution

The fourth proportional to 91,331.79, 136,776.25 and 63,172.81 is: 94,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,331.79 : 136,776.25 = 63,172.81 : x
  2. Step 2: Convert to fraction form
    91,331.79/136,776.25 = 63,172.81/x
  3. Step 3: Cross multiply
    91,331.79x = 136,776.25 × 63,172.81
  4. Step 4: Simplify right side
    91,331.79x = 8,640,540,053.76
  5. Step 5: Solve for x
    x = 8,640,540,053.76/91,331.79
  6. Step 6: Final answer
    x = 94,606.05

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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.