Home / 91,225.53-126,236.34-77,775.48

Finding the Fourth Proportional to 91,225.53, 126,236.34 and 77,775.48

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Solution

The fourth proportional to 91,225.53, 126,236.34 and 77,775.48 is: 107,624.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,225.53 : 126,236.34 = 77,775.48 : x
  2. Step 2: Convert to fraction form
    91,225.53/126,236.34 = 77,775.48/x
  3. Step 3: Cross multiply
    91,225.53x = 126,236.34 × 77,775.48
  4. Step 4: Simplify right side
    91,225.53x = 9,818,091,936.94
  5. Step 5: Solve for x
    x = 9,818,091,936.94/91,225.53
  6. Step 6: Final answer
    x = 107,624.39

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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.