Home / 100,124.14-138,163.44-57,686.08

Finding the Fourth Proportional to 100,124.14, 138,163.44 and 57,686.08

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Solution

The fourth proportional to 100,124.14, 138,163.44 and 57,686.08 is: 79,602.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,124.14 : 138,163.44 = 57,686.08 : x
  2. Step 2: Convert to fraction form
    100,124.14/138,163.44 = 57,686.08/x
  3. Step 3: Cross multiply
    100,124.14x = 138,163.44 × 57,686.08
  4. Step 4: Simplify right side
    100,124.14x = 7,970,107,252.92
  5. Step 5: Solve for x
    x = 7,970,107,252.92/100,124.14
  6. Step 6: Final answer
    x = 79,602.25

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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.