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Finding the Fourth Proportional to 153,710.54, 212,084.42 and 93,279.81

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Solution

The fourth proportional to 153,710.54, 212,084.42 and 93,279.81 is: 128,704.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,710.54 : 212,084.42 = 93,279.81 : x
  2. Step 2: Convert to fraction form
    153,710.54/212,084.42 = 93,279.81/x
  3. Step 3: Cross multiply
    153,710.54x = 212,084.42 × 93,279.81
  4. Step 4: Simplify right side
    153,710.54x = 19,783,194,401.56
  5. Step 5: Solve for x
    x = 19,783,194,401.56/153,710.54
  6. Step 6: Final answer
    x = 128,704.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.