Home / 98,643.45-136,125.20-55,622.55

Finding the Fourth Proportional to 98,643.45, 136,125.20 and 55,622.55

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Solution

The fourth proportional to 98,643.45, 136,125.20 and 55,622.55 is: 76,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,643.45 : 136,125.20 = 55,622.55 : x
  2. Step 2: Convert to fraction form
    98,643.45/136,125.20 = 55,622.55/x
  3. Step 3: Cross multiply
    98,643.45x = 136,125.20 × 55,622.55
  4. Step 4: Simplify right side
    98,643.45x = 7,571,630,465.15
  5. Step 5: Solve for x
    x = 7,571,630,465.15/98,643.45
  6. Step 6: Final answer
    x = 76,757.56

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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.