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Finding the Fourth Proportional to 91,849.60, 137,482.80 and 84,851.20

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Solution

The fourth proportional to 91,849.60, 137,482.80 and 84,851.20 is: 127,007.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,849.60 : 137,482.80 = 84,851.20 : x
  2. Step 2: Convert to fraction form
    91,849.60/137,482.80 = 84,851.20/x
  3. Step 3: Cross multiply
    91,849.60x = 137,482.80 × 84,851.20
  4. Step 4: Simplify right side
    91,849.60x = 11,665,580,559.36
  5. Step 5: Solve for x
    x = 11,665,580,559.36/91,849.60
  6. Step 6: Final answer
    x = 127,007.42

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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.