Home / 109,620.60-164,430.90-87,313.20

Finding the Fourth Proportional to 109,620.60, 164,430.90 and 87,313.20

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Solution

The fourth proportional to 109,620.60, 164,430.90 and 87,313.20 is: 130,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,620.60 : 164,430.90 = 87,313.20 : x
  2. Step 2: Convert to fraction form
    109,620.60/164,430.90 = 87,313.20/x
  3. Step 3: Cross multiply
    109,620.60x = 164,430.90 × 87,313.20
  4. Step 4: Simplify right side
    109,620.60x = 14,356,988,057.88
  5. Step 5: Solve for x
    x = 14,356,988,057.88/109,620.60
  6. Step 6: Final answer
    x = 130,969.80

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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.