Home / 128,124.90-192,187.35-122,001.30

Finding the Fourth Proportional to 128,124.90, 192,187.35 and 122,001.30

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Solution

The fourth proportional to 128,124.90, 192,187.35 and 122,001.30 is: 183,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,124.90 : 192,187.35 = 122,001.30 : x
  2. Step 2: Convert to fraction form
    128,124.90/192,187.35 = 122,001.30/x
  3. Step 3: Cross multiply
    128,124.90x = 192,187.35 × 122,001.30
  4. Step 4: Simplify right side
    128,124.90x = 23,447,106,543.56
  5. Step 5: Solve for x
    x = 23,447,106,543.56/128,124.90
  6. Step 6: Final answer
    x = 183,001.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.