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Finding the Fourth Proportional to 153,376.20, 229,848.30 and 121,840.20

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Solution

The fourth proportional to 153,376.20, 229,848.30 and 121,840.20 is: 182,588.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,376.20 : 229,848.30 = 121,840.20 : x
  2. Step 2: Convert to fraction form
    153,376.20/229,848.30 = 121,840.20/x
  3. Step 3: Cross multiply
    153,376.20x = 229,848.30 × 121,840.20
  4. Step 4: Simplify right side
    153,376.20x = 28,004,762,841.66
  5. Step 5: Solve for x
    x = 28,004,762,841.66/153,376.20
  6. Step 6: Final answer
    x = 182,588.71

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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.