Home / 106,030.20-146,281.09-78,500.43

Finding the Fourth Proportional to 106,030.20, 146,281.09 and 78,500.43

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Solution

The fourth proportional to 106,030.20, 146,281.09 and 78,500.43 is: 108,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,030.20 : 146,281.09 = 78,500.43 : x
  2. Step 2: Convert to fraction form
    106,030.20/146,281.09 = 78,500.43/x
  3. Step 3: Cross multiply
    106,030.20x = 146,281.09 × 78,500.43
  4. Step 4: Simplify right side
    106,030.20x = 11,483,128,465.87
  5. Step 5: Solve for x
    x = 11,483,128,465.87/106,030.20
  6. Step 6: Final answer
    x = 108,300.55

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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.