Home / 91,291.25-126,142.89-70,252.31

Finding the Fourth Proportional to 91,291.25, 126,142.89 and 70,252.31

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Solution

The fourth proportional to 91,291.25, 126,142.89 and 70,252.31 is: 97,072.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,291.25 : 126,142.89 = 70,252.31 : x
  2. Step 2: Convert to fraction form
    91,291.25/126,142.89 = 70,252.31/x
  3. Step 3: Cross multiply
    91,291.25x = 126,142.89 × 70,252.31
  4. Step 4: Simplify right side
    91,291.25x = 8,861,829,412.58
  5. Step 5: Solve for x
    x = 8,861,829,412.58/91,291.25
  6. Step 6: Final answer
    x = 97,072.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.