Home / 140,068.75-193,294.63-76,406.55

Finding the Fourth Proportional to 140,068.75, 193,294.63 and 76,406.55

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Solution

The fourth proportional to 140,068.75, 193,294.63 and 76,406.55 is: 105,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,068.75 : 193,294.63 = 76,406.55 : x
  2. Step 2: Convert to fraction form
    140,068.75/193,294.63 = 76,406.55/x
  3. Step 3: Cross multiply
    140,068.75x = 193,294.63 × 76,406.55
  4. Step 4: Simplify right side
    140,068.75x = 14,768,975,811.83
  5. Step 5: Solve for x
    x = 14,768,975,811.83/140,068.75
  6. Step 6: Final answer
    x = 105,440.91

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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.