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Finding the Fourth Proportional to 177,220.80, 265,831.20 and 77,428.80

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Solution

The fourth proportional to 177,220.80, 265,831.20 and 77,428.80 is: 116,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,220.80 : 265,831.20 = 77,428.80 : x
  2. Step 2: Convert to fraction form
    177,220.80/265,831.20 = 77,428.80/x
  3. Step 3: Cross multiply
    177,220.80x = 265,831.20 × 77,428.80
  4. Step 4: Simplify right side
    177,220.80x = 20,582,990,818.56
  5. Step 5: Solve for x
    x = 20,582,990,818.56/177,220.80
  6. Step 6: Final answer
    x = 116,143.20

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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.