Home / 100,148.40-138,244.73-65,706.26

Finding the Fourth Proportional to 100,148.40, 138,244.73 and 65,706.26

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Solution

The fourth proportional to 100,148.40, 138,244.73 and 65,706.26 is: 90,700.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,148.40 : 138,244.73 = 65,706.26 : x
  2. Step 2: Convert to fraction form
    100,148.40/138,244.73 = 65,706.26/x
  3. Step 3: Cross multiply
    100,148.40x = 138,244.73 × 65,706.26
  4. Step 4: Simplify right side
    100,148.40x = 9,083,543,153.25
  5. Step 5: Solve for x
    x = 9,083,543,153.25/100,148.40
  6. Step 6: Final answer
    x = 90,700.83

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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.