Home / 100,523.18-138,624.36-67,889.26

Finding the Fourth Proportional to 100,523.18, 138,624.36 and 67,889.26

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Solution

The fourth proportional to 100,523.18, 138,624.36 and 67,889.26 is: 93,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,523.18 : 138,624.36 = 67,889.26 : x
  2. Step 2: Convert to fraction form
    100,523.18/138,624.36 = 67,889.26/x
  3. Step 3: Cross multiply
    100,523.18x = 138,624.36 × 67,889.26
  4. Step 4: Simplify right side
    100,523.18x = 9,411,105,908.83
  5. Step 5: Solve for x
    x = 9,411,105,908.83/100,523.18
  6. Step 6: Final answer
    x = 93,621.25

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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.