Home / 100,071.57-138,076.16-59,777.45

Finding the Fourth Proportional to 100,071.57, 138,076.16 and 59,777.45

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Solution

The fourth proportional to 100,071.57, 138,076.16 and 59,777.45 is: 82,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,071.57 : 138,076.16 = 59,777.45 : x
  2. Step 2: Convert to fraction form
    100,071.57/138,076.16 = 59,777.45/x
  3. Step 3: Cross multiply
    100,071.57x = 138,076.16 × 59,777.45
  4. Step 4: Simplify right side
    100,071.57x = 8,253,840,750.59
  5. Step 5: Solve for x
    x = 8,253,840,750.59/100,071.57
  6. Step 6: Final answer
    x = 82,479.38

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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.