Home / 123,928.90-171,021.45-70,224.15

Finding the Fourth Proportional to 123,928.90, 171,021.45 and 70,224.15

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Solution

The fourth proportional to 123,928.90, 171,021.45 and 70,224.15 is: 96,909.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,928.90 : 171,021.45 = 70,224.15 : x
  2. Step 2: Convert to fraction form
    123,928.90/171,021.45 = 70,224.15/x
  3. Step 3: Cross multiply
    123,928.90x = 171,021.45 × 70,224.15
  4. Step 4: Simplify right side
    123,928.90x = 12,009,836,862.69
  5. Step 5: Solve for x
    x = 12,009,836,862.69/123,928.90
  6. Step 6: Final answer
    x = 96,909.09

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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.