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Finding the Fourth Proportional to 153,215.79, 229,929.39 and 53,376.81

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Solution

The fourth proportional to 153,215.79, 229,929.39 and 53,376.81 is: 80,102.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,215.79 : 229,929.39 = 53,376.81 : x
  2. Step 2: Convert to fraction form
    153,215.79/229,929.39 = 53,376.81/x
  3. Step 3: Cross multiply
    153,215.79x = 229,929.39 × 53,376.81
  4. Step 4: Simplify right side
    153,215.79x = 12,272,897,363.45
  5. Step 5: Solve for x
    x = 12,272,897,363.45/153,215.79
  6. Step 6: Final answer
    x = 80,102.04

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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.