Home / 137,180.04-189,315.80-76,747.08

Finding the Fourth Proportional to 137,180.04, 189,315.80 and 76,747.08

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Solution

The fourth proportional to 137,180.04, 189,315.80 and 76,747.08 is: 105,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,180.04 : 189,315.80 = 76,747.08 : x
  2. Step 2: Convert to fraction form
    137,180.04/189,315.80 = 76,747.08/x
  3. Step 3: Cross multiply
    137,180.04x = 189,315.80 × 76,747.08
  4. Step 4: Simplify right side
    137,180.04x = 14,529,434,847.86
  5. Step 5: Solve for x
    x = 14,529,434,847.86/137,180.04
  6. Step 6: Final answer
    x = 105,915.08

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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.