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Finding the Fourth Proportional to 155,797.23, 215,177.52 and 104,721.29

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Solution

The fourth proportional to 155,797.23, 215,177.52 and 104,721.29 is: 144,634.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,797.23 : 215,177.52 = 104,721.29 : x
  2. Step 2: Convert to fraction form
    155,797.23/215,177.52 = 104,721.29/x
  3. Step 3: Cross multiply
    155,797.23x = 215,177.52 × 104,721.29
  4. Step 4: Simplify right side
    155,797.23x = 22,533,666,397.51
  5. Step 5: Solve for x
    x = 22,533,666,397.51/155,797.23
  6. Step 6: Final answer
    x = 144,634.58

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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.