Home / 91,290.25-126,141.51-70,251.31

Finding the Fourth Proportional to 91,290.25, 126,141.51 and 70,251.31

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Solution

The fourth proportional to 91,290.25, 126,141.51 and 70,251.31 is: 97,070.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,290.25 : 126,141.51 = 70,251.31 : x
  2. Step 2: Convert to fraction form
    91,290.25/126,141.51 = 70,251.31/x
  3. Step 3: Cross multiply
    91,290.25x = 126,141.51 × 70,251.31
  4. Step 4: Simplify right side
    91,290.25x = 8,861,606,322.88
  5. Step 5: Solve for x
    x = 8,861,606,322.88/91,290.25
  6. Step 6: Final answer
    x = 97,070.68

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1.5x scale

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.