Home / 138,396.12-190,787.58-98,583

Finding the Fourth Proportional to 138,396.12, 190,787.58 and 98,583

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Solution

The fourth proportional to 138,396.12, 190,787.58 and 98,583 is: 135,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,396.12 : 190,787.58 = 98,583 : x
  2. Step 2: Convert to fraction form
    138,396.12/190,787.58 = 98,583/x
  3. Step 3: Cross multiply
    138,396.12x = 190,787.58 × 98,583
  4. Step 4: Simplify right side
    138,396.12x = 18,808,411,999.14
  5. Step 5: Solve for x
    x = 18,808,411,999.14/138,396.12
  6. Step 6: Final answer
    x = 135,902.74

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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.