Home / 91,615.10-126,384.48-75,507.84

Finding the Fourth Proportional to 91,615.10, 126,384.48 and 75,507.84

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Solution

The fourth proportional to 91,615.10, 126,384.48 and 75,507.84 is: 104,164.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,615.10 : 126,384.48 = 75,507.84 : x
  2. Step 2: Convert to fraction form
    91,615.10/126,384.48 = 75,507.84/x
  3. Step 3: Cross multiply
    91,615.10x = 126,384.48 × 75,507.84
  4. Step 4: Simplify right side
    91,615.10x = 9,543,019,094.32
  5. Step 5: Solve for x
    x = 9,543,019,094.32/91,615.10
  6. Step 6: Final answer
    x = 104,164.27

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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.