Home / 100,324.32-138,344.23-70,098.62

Finding the Fourth Proportional to 100,324.32, 138,344.23 and 70,098.62

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Solution

The fourth proportional to 100,324.32, 138,344.23 and 70,098.62 is: 96,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,324.32 : 138,344.23 = 70,098.62 : x
  2. Step 2: Convert to fraction form
    100,324.32/138,344.23 = 70,098.62/x
  3. Step 3: Cross multiply
    100,324.32x = 138,344.23 × 70,098.62
  4. Step 4: Simplify right side
    100,324.32x = 9,697,738,806.71
  5. Step 5: Solve for x
    x = 9,697,738,806.71/100,324.32
  6. Step 6: Final answer
    x = 96,663.89

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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.