Home / 128,127.95-190,876.49-122,370.74

Finding the Fourth Proportional to 128,127.95, 190,876.49 and 122,370.74

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Solution

The fourth proportional to 128,127.95, 190,876.49 and 122,370.74 is: 182,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,127.95 : 190,876.49 = 122,370.74 : x
  2. Step 2: Convert to fraction form
    128,127.95/190,876.49 = 122,370.74/x
  3. Step 3: Cross multiply
    128,127.95x = 190,876.49 × 122,370.74
  4. Step 4: Simplify right side
    128,127.95x = 23,357,695,763.67
  5. Step 5: Solve for x
    x = 23,357,695,763.67/128,127.95
  6. Step 6: Final answer
    x = 182,299.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.