Home / 137,180.08-189,315.87-76,747.12

Finding the Fourth Proportional to 137,180.08, 189,315.87 and 76,747.12

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Solution

The fourth proportional to 137,180.08, 189,315.87 and 76,747.12 is: 105,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,180.08 : 189,315.87 = 76,747.12 : x
  2. Step 2: Convert to fraction form
    137,180.08/189,315.87 = 76,747.12/x
  3. Step 3: Cross multiply
    137,180.08x = 189,315.87 × 76,747.12
  4. Step 4: Simplify right side
    137,180.08x = 14,529,447,792.79
  5. Step 5: Solve for x
    x = 14,529,447,792.79/137,180.08
  6. Step 6: Final answer
    x = 105,915.14

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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.