Home / 103,534.32-155,378.64-76,941.60

Finding the Fourth Proportional to 103,534.32, 155,378.64 and 76,941.60

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Solution

The fourth proportional to 103,534.32, 155,378.64 and 76,941.60 is: 115,469.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,534.32 : 155,378.64 = 76,941.60 : x
  2. Step 2: Convert to fraction form
    103,534.32/155,378.64 = 76,941.60/x
  3. Step 3: Cross multiply
    103,534.32x = 155,378.64 × 76,941.60
  4. Step 4: Simplify right side
    103,534.32x = 11,955,081,167.42
  5. Step 5: Solve for x
    x = 11,955,081,167.42/103,534.32
  6. Step 6: Final answer
    x = 115,469.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.