Home / 145,940.70-218,911.05-52,455.90

Finding the Fourth Proportional to 145,940.70, 218,911.05 and 52,455.90

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Solution

The fourth proportional to 145,940.70, 218,911.05 and 52,455.90 is: 78,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,940.70 : 218,911.05 = 52,455.90 : x
  2. Step 2: Convert to fraction form
    145,940.70/218,911.05 = 52,455.90/x
  3. Step 3: Cross multiply
    145,940.70x = 218,911.05 × 52,455.90
  4. Step 4: Simplify right side
    145,940.70x = 11,483,176,147.70
  5. Step 5: Solve for x
    x = 11,483,176,147.70/145,940.70
  6. Step 6: Final answer
    x = 78,683.85

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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.