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Finding the Fourth Proportional to 115,388, 159,235.46 and 62,396

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Solution

The fourth proportional to 115,388, 159,235.46 and 62,396 is: 86,106.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,388 : 159,235.46 = 62,396 : x
  2. Step 2: Convert to fraction form
    115,388/159,235.46 = 62,396/x
  3. Step 3: Cross multiply
    115,388x = 159,235.46 × 62,396
  4. Step 4: Simplify right side
    115,388x = 9,935,655,762.16
  5. Step 5: Solve for x
    x = 9,935,655,762.16/115,388
  6. Step 6: Final answer
    x = 86,106.49

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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.