Home / 98,938.60-136,555.90-90,968.20

Finding the Fourth Proportional to 98,938.60, 136,555.90 and 90,968.20

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Solution

The fourth proportional to 98,938.60, 136,555.90 and 90,968.20 is: 125,555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,938.60 : 136,555.90 = 90,968.20 : x
  2. Step 2: Convert to fraction form
    98,938.60/136,555.90 = 90,968.20/x
  3. Step 3: Cross multiply
    98,938.60x = 136,555.90 × 90,968.20
  4. Step 4: Simplify right side
    98,938.60x = 12,422,244,422.38
  5. Step 5: Solve for x
    x = 12,422,244,422.38/98,938.60
  6. Step 6: Final answer
    x = 125,555.09

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1.5x scale

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.