Home / 100,272.07-138,375.47-59,987.53

Finding the Fourth Proportional to 100,272.07, 138,375.47 and 59,987.53

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Solution

The fourth proportional to 100,272.07, 138,375.47 and 59,987.53 is: 82,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,272.07 : 138,375.47 = 59,987.53 : x
  2. Step 2: Convert to fraction form
    100,272.07/138,375.47 = 59,987.53/x
  3. Step 3: Cross multiply
    100,272.07x = 138,375.47 × 59,987.53
  4. Step 4: Simplify right side
    100,272.07x = 8,300,802,657.89
  5. Step 5: Solve for x
    x = 8,300,802,657.89/100,272.07
  6. Step 6: Final answer
    x = 82,782.80

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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.