Home / 215,957.10-323,935.65-103,618.20

Finding the Fourth Proportional to 215,957.10, 323,935.65 and 103,618.20

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Solution

The fourth proportional to 215,957.10, 323,935.65 and 103,618.20 is: 155,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,957.10 : 323,935.65 = 103,618.20 : x
  2. Step 2: Convert to fraction form
    215,957.10/323,935.65 = 103,618.20/x
  3. Step 3: Cross multiply
    215,957.10x = 323,935.65 × 103,618.20
  4. Step 4: Simplify right side
    215,957.10x = 33,565,628,968.83
  5. Step 5: Solve for x
    x = 33,565,628,968.83/215,957.10
  6. Step 6: Final answer
    x = 155,427.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.