Home / 91,890.88-126,716.08-86,533.28

Finding the Fourth Proportional to 91,890.88, 126,716.08 and 86,533.28

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Solution

The fourth proportional to 91,890.88, 126,716.08 and 86,533.28 is: 119,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,890.88 : 126,716.08 = 86,533.28 : x
  2. Step 2: Convert to fraction form
    91,890.88/126,716.08 = 86,533.28/x
  3. Step 3: Cross multiply
    91,890.88x = 126,716.08 × 86,533.28
  4. Step 4: Simplify right side
    91,890.88x = 10,965,158,031.14
  5. Step 5: Solve for x
    x = 10,965,158,031.14/91,890.88
  6. Step 6: Final answer
    x = 119,328.03

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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.