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Finding the Fourth Proportional to 195,981, 270,445.95 and 115,411.92

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Solution

The fourth proportional to 195,981, 270,445.95 and 115,411.92 is: 159,263.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,981 : 270,445.95 = 115,411.92 : x
  2. Step 2: Convert to fraction form
    195,981/270,445.95 = 115,411.92/x
  3. Step 3: Cross multiply
    195,981x = 270,445.95 × 115,411.92
  4. Step 4: Simplify right side
    195,981x = 31,212,686,345.72
  5. Step 5: Solve for x
    x = 31,212,686,345.72/195,981
  6. Step 6: Final answer
    x = 159,263.84

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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.