Home / 147,623.20-221,434.80-85,220.80

Finding the Fourth Proportional to 147,623.20, 221,434.80 and 85,220.80

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Solution

The fourth proportional to 147,623.20, 221,434.80 and 85,220.80 is: 127,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,623.20 : 221,434.80 = 85,220.80 : x
  2. Step 2: Convert to fraction form
    147,623.20/221,434.80 = 85,220.80/x
  3. Step 3: Cross multiply
    147,623.20x = 221,434.80 × 85,220.80
  4. Step 4: Simplify right side
    147,623.20x = 18,870,850,803.84
  5. Step 5: Solve for x
    x = 18,870,850,803.84/147,623.20
  6. Step 6: Final answer
    x = 127,831.20

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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.