Home / 147,867.40-221,801.10-81,281.80

Finding the Fourth Proportional to 147,867.40, 221,801.10 and 81,281.80

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Solution

The fourth proportional to 147,867.40, 221,801.10 and 81,281.80 is: 121,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,867.40 : 221,801.10 = 81,281.80 : x
  2. Step 2: Convert to fraction form
    147,867.40/221,801.10 = 81,281.80/x
  3. Step 3: Cross multiply
    147,867.40x = 221,801.10 × 81,281.80
  4. Step 4: Simplify right side
    147,867.40x = 18,028,392,649.98
  5. Step 5: Solve for x
    x = 18,028,392,649.98/147,867.40
  6. Step 6: Final answer
    x = 121,922.70

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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.