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Finding the Fourth Proportional to 152,632.78, 210,654.75 and 84,664.87

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Solution

The fourth proportional to 152,632.78, 210,654.75 and 84,664.87 is: 116,849.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,632.78 : 210,654.75 = 84,664.87 : x
  2. Step 2: Convert to fraction form
    152,632.78/210,654.75 = 84,664.87/x
  3. Step 3: Cross multiply
    152,632.78x = 210,654.75 × 84,664.87
  4. Step 4: Simplify right side
    152,632.78x = 17,835,057,023.63
  5. Step 5: Solve for x
    x = 17,835,057,023.63/152,632.78
  6. Step 6: Final answer
    x = 116,849.45

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1.5x scale

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.