Home / 91,302.56-136,968.54-28,122.66

Finding the Fourth Proportional to 91,302.56, 136,968.54 and 28,122.66

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Solution

The fourth proportional to 91,302.56, 136,968.54 and 28,122.66 is: 42,188.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,302.56 : 136,968.54 = 28,122.66 : x
  2. Step 2: Convert to fraction form
    91,302.56/136,968.54 = 28,122.66/x
  3. Step 3: Cross multiply
    91,302.56x = 136,968.54 × 28,122.66
  4. Step 4: Simplify right side
    91,302.56x = 3,851,919,681.12
  5. Step 5: Solve for x
    x = 3,851,919,681.12/91,302.56
  6. Step 6: Final answer
    x = 42,188.52

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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.