Home / 140,154.14-193,411.32-76,491.38

Finding the Fourth Proportional to 140,154.14, 193,411.32 and 76,491.38

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Solution

The fourth proportional to 140,154.14, 193,411.32 and 76,491.38 is: 105,557.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,154.14 : 193,411.32 = 76,491.38 : x
  2. Step 2: Convert to fraction form
    140,154.14/193,411.32 = 76,491.38/x
  3. Step 3: Cross multiply
    140,154.14x = 193,411.32 × 76,491.38
  4. Step 4: Simplify right side
    140,154.14x = 14,794,298,774.42
  5. Step 5: Solve for x
    x = 14,794,298,774.42/140,154.14
  6. Step 6: Final answer
    x = 105,557.34

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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.