Home / 128,327.40-192,355.02-49,407.48

Finding the Fourth Proportional to 128,327.40, 192,355.02 and 49,407.48

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Solution

The fourth proportional to 128,327.40, 192,355.02 and 49,407.48 is: 74,058.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,327.40 : 192,355.02 = 49,407.48 : x
  2. Step 2: Convert to fraction form
    128,327.40/192,355.02 = 49,407.48/x
  3. Step 3: Cross multiply
    128,327.40x = 192,355.02 × 49,407.48
  4. Step 4: Simplify right side
    128,327.40x = 9,503,776,803.55
  5. Step 5: Solve for x
    x = 9,503,776,803.55/128,327.40
  6. Step 6: Final answer
    x = 74,058.83

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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.