Home / 128,827.40-193,241.10-105,787.40

Finding the Fourth Proportional to 128,827.40, 193,241.10 and 105,787.40

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Solution

The fourth proportional to 128,827.40, 193,241.10 and 105,787.40 is: 158,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,827.40 : 193,241.10 = 105,787.40 : x
  2. Step 2: Convert to fraction form
    128,827.40/193,241.10 = 105,787.40/x
  3. Step 3: Cross multiply
    128,827.40x = 193,241.10 × 105,787.40
  4. Step 4: Simplify right side
    128,827.40x = 20,442,473,542.14
  5. Step 5: Solve for x
    x = 20,442,473,542.14/128,827.40
  6. Step 6: Final answer
    x = 158,681.10

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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.