Home / 107,911.58-148,865.06-72,110.40

Finding the Fourth Proportional to 107,911.58, 148,865.06 and 72,110.40

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Solution

The fourth proportional to 107,911.58, 148,865.06 and 72,110.40 is: 99,476.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,911.58 : 148,865.06 = 72,110.40 : x
  2. Step 2: Convert to fraction form
    107,911.58/148,865.06 = 72,110.40/x
  3. Step 3: Cross multiply
    107,911.58x = 148,865.06 × 72,110.40
  4. Step 4: Simplify right side
    107,911.58x = 10,734,719,022.62
  5. Step 5: Solve for x
    x = 10,734,719,022.62/107,911.58
  6. Step 6: Final answer
    x = 99,476.99

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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.