Home / 106,313.40-159,470.10-81,430.20

Finding the Fourth Proportional to 106,313.40, 159,470.10 and 81,430.20

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Solution

The fourth proportional to 106,313.40, 159,470.10 and 81,430.20 is: 122,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,313.40 : 159,470.10 = 81,430.20 : x
  2. Step 2: Convert to fraction form
    106,313.40/159,470.10 = 81,430.20/x
  3. Step 3: Cross multiply
    106,313.40x = 159,470.10 × 81,430.20
  4. Step 4: Simplify right side
    106,313.40x = 12,985,682,137.02
  5. Step 5: Solve for x
    x = 12,985,682,137.02/106,313.40
  6. Step 6: Final answer
    x = 122,145.30

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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.