Home / 100,111.41-138,140.10-59,816.66

Finding the Fourth Proportional to 100,111.41, 138,140.10 and 59,816.66

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Solution

The fourth proportional to 100,111.41, 138,140.10 and 59,816.66 is: 82,538.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,111.41 : 138,140.10 = 59,816.66 : x
  2. Step 2: Convert to fraction form
    100,111.41/138,140.10 = 59,816.66/x
  3. Step 3: Cross multiply
    100,111.41x = 138,140.10 × 59,816.66
  4. Step 4: Simplify right side
    100,111.41x = 8,263,078,703.37
  5. Step 5: Solve for x
    x = 8,263,078,703.37/100,111.41
  6. Step 6: Final answer
    x = 82,538.83

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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.