Home / 140,078.12-193,307.82-76,416.18

Finding the Fourth Proportional to 140,078.12, 193,307.82 and 76,416.18

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Solution

The fourth proportional to 140,078.12, 193,307.82 and 76,416.18 is: 105,454.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,078.12 : 193,307.82 = 76,416.18 : x
  2. Step 2: Convert to fraction form
    140,078.12/193,307.82 = 76,416.18/x
  3. Step 3: Cross multiply
    140,078.12x = 193,307.82 × 76,416.18
  4. Step 4: Simplify right side
    140,078.12x = 14,771,845,168.53
  5. Step 5: Solve for x
    x = 14,771,845,168.53/140,078.12
  6. Step 6: Final answer
    x = 105,454.34

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1.5x scale

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.