Home / 138,397.12-190,788.96-98,584

Finding the Fourth Proportional to 138,397.12, 190,788.96 and 98,584

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Solution

The fourth proportional to 138,397.12, 190,788.96 and 98,584 is: 135,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,397.12 : 190,788.96 = 98,584 : x
  2. Step 2: Convert to fraction form
    138,397.12/190,788.96 = 98,584/x
  3. Step 3: Cross multiply
    138,397.12x = 190,788.96 × 98,584
  4. Step 4: Simplify right side
    138,397.12x = 18,808,738,832.64
  5. Step 5: Solve for x
    x = 18,808,738,832.64/138,397.12
  6. Step 6: Final answer
    x = 135,904.12

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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.