Home / 100,117.13-138,177.09-57,096.71

Finding the Fourth Proportional to 100,117.13, 138,177.09 and 57,096.71

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Solution

The fourth proportional to 100,117.13, 138,177.09 and 57,096.71 is: 78,802.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,117.13 : 138,177.09 = 57,096.71 : x
  2. Step 2: Convert to fraction form
    100,117.13/138,177.09 = 57,096.71/x
  3. Step 3: Cross multiply
    100,117.13x = 138,177.09 × 57,096.71
  4. Step 4: Simplify right side
    100,117.13x = 7,889,457,063.65
  5. Step 5: Solve for x
    x = 7,889,457,063.65/100,117.13
  6. Step 6: Final answer
    x = 78,802.27

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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.