Home / 98,921.35-136,518.15-55,885.90

Finding the Fourth Proportional to 98,921.35, 136,518.15 and 55,885.90

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Solution

The fourth proportional to 98,921.35, 136,518.15 and 55,885.90 is: 77,126.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,921.35 : 136,518.15 = 55,885.90 : x
  2. Step 2: Convert to fraction form
    98,921.35/136,518.15 = 55,885.90/x
  3. Step 3: Cross multiply
    98,921.35x = 136,518.15 × 55,885.90
  4. Step 4: Simplify right side
    98,921.35x = 7,629,439,679.09
  5. Step 5: Solve for x
    x = 7,629,439,679.09/98,921.35
  6. Step 6: Final answer
    x = 77,126.32

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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.