Home / 100,272.42-138,362.76-59,971.47

Finding the Fourth Proportional to 100,272.42, 138,362.76 and 59,971.47

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Solution

The fourth proportional to 100,272.42, 138,362.76 and 59,971.47 is: 82,752.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,272.42 : 138,362.76 = 59,971.47 : x
  2. Step 2: Convert to fraction form
    100,272.42/138,362.76 = 59,971.47/x
  3. Step 3: Cross multiply
    100,272.42x = 138,362.76 × 59,971.47
  4. Step 4: Simplify right side
    100,272.42x = 8,297,818,110.46
  5. Step 5: Solve for x
    x = 8,297,818,110.46/100,272.42
  6. Step 6: Final answer
    x = 82,752.75

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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.