Home / 91,302.06-136,967.79-28,122.16

Finding the Fourth Proportional to 91,302.06, 136,967.79 and 28,122.16

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Solution

The fourth proportional to 91,302.06, 136,967.79 and 28,122.16 is: 42,187.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,302.06 : 136,967.79 = 28,122.16 : x
  2. Step 2: Convert to fraction form
    91,302.06/136,967.79 = 28,122.16/x
  3. Step 3: Cross multiply
    91,302.06x = 136,967.79 × 28,122.16
  4. Step 4: Simplify right side
    91,302.06x = 3,851,829,420.39
  5. Step 5: Solve for x
    x = 3,851,829,420.39/91,302.06
  6. Step 6: Final answer
    x = 42,187.76

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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.