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Finding the Fourth Proportional to 153,339.20, 229,792.80 and 121,803.20

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Solution

The fourth proportional to 153,339.20, 229,792.80 and 121,803.20 is: 182,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,339.20 : 229,792.80 = 121,803.20 : x
  2. Step 2: Convert to fraction form
    153,339.20/229,792.80 = 121,803.20/x
  3. Step 3: Cross multiply
    153,339.20x = 229,792.80 × 121,803.20
  4. Step 4: Simplify right side
    153,339.20x = 27,989,498,376.96
  5. Step 5: Solve for x
    x = 27,989,498,376.96/153,339.20
  6. Step 6: Final answer
    x = 182,533.22

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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.