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Finding the Fourth Proportional to 153,717.78, 212,094.42 and 93,287.08

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Solution

The fourth proportional to 153,717.78, 212,094.42 and 93,287.08 is: 128,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,717.78 : 212,094.42 = 93,287.08 : x
  2. Step 2: Convert to fraction form
    153,717.78/212,094.42 = 93,287.08/x
  3. Step 3: Cross multiply
    153,717.78x = 212,094.42 × 93,287.08
  4. Step 4: Simplify right side
    153,717.78x = 19,785,669,126.09
  5. Step 5: Solve for x
    x = 19,785,669,126.09/153,717.78
  6. Step 6: Final answer
    x = 128,714.25

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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.