Home / 128,306.32-192,393.77-68,368.95

Finding the Fourth Proportional to 128,306.32, 192,393.77 and 68,368.95

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Solution

The fourth proportional to 128,306.32, 192,393.77 and 68,368.95 is: 102,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,306.32 : 192,393.77 = 68,368.95 : x
  2. Step 2: Convert to fraction form
    128,306.32/192,393.77 = 68,368.95/x
  3. Step 3: Cross multiply
    128,306.32x = 192,393.77 × 68,368.95
  4. Step 4: Simplify right side
    128,306.32x = 13,153,759,699.60
  5. Step 5: Solve for x
    x = 13,153,759,699.60/128,306.32
  6. Step 6: Final answer
    x = 102,518.41

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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.