Home / 100,441.77-138,611.73-55,117.10

Finding the Fourth Proportional to 100,441.77, 138,611.73 and 55,117.10

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Solution

The fourth proportional to 100,441.77, 138,611.73 and 55,117.10 is: 76,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,441.77 : 138,611.73 = 55,117.10 : x
  2. Step 2: Convert to fraction form
    100,441.77/138,611.73 = 55,117.10/x
  3. Step 3: Cross multiply
    100,441.77x = 138,611.73 × 55,117.10
  4. Step 4: Simplify right side
    100,441.77x = 7,639,875,890.52
  5. Step 5: Solve for x
    x = 7,639,875,890.52/100,441.77
  6. Step 6: Final answer
    x = 76,062.74

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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.