Home / 145,039.46-217,624.44-78,401.57

Finding the Fourth Proportional to 145,039.46, 217,624.44 and 78,401.57

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Solution

The fourth proportional to 145,039.46, 217,624.44 and 78,401.57 is: 117,637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,039.46 : 217,624.44 = 78,401.57 : x
  2. Step 2: Convert to fraction form
    145,039.46/217,624.44 = 78,401.57/x
  3. Step 3: Cross multiply
    145,039.46x = 217,624.44 × 78,401.57
  4. Step 4: Simplify right side
    145,039.46x = 17,062,096,678.25
  5. Step 5: Solve for x
    x = 17,062,096,678.25/145,039.46
  6. Step 6: Final answer
    x = 117,637.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.