Home / 100,389.29-138,513.98-60,087.74

Finding the Fourth Proportional to 100,389.29, 138,513.98 and 60,087.74

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Solution

The fourth proportional to 100,389.29, 138,513.98 and 60,087.74 is: 82,907.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,389.29 : 138,513.98 = 60,087.74 : x
  2. Step 2: Convert to fraction form
    100,389.29/138,513.98 = 60,087.74/x
  3. Step 3: Cross multiply
    100,389.29x = 138,513.98 × 60,087.74
  4. Step 4: Simplify right side
    100,389.29x = 8,322,991,474.25
  5. Step 5: Solve for x
    x = 8,322,991,474.25/100,389.29
  6. Step 6: Final answer
    x = 82,907.17

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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.