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Finding the Fourth Proportional to 104,955.60, 157,740.60 and 91,438.80

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Solution

The fourth proportional to 104,955.60, 157,740.60 and 91,438.80 is: 137,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,955.60 : 157,740.60 = 91,438.80 : x
  2. Step 2: Convert to fraction form
    104,955.60/157,740.60 = 91,438.80/x
  3. Step 3: Cross multiply
    104,955.60x = 157,740.60 × 91,438.80
  4. Step 4: Simplify right side
    104,955.60x = 14,423,611,175.28
  5. Step 5: Solve for x
    x = 14,423,611,175.28/104,955.60
  6. Step 6: Final answer
    x = 137,425.84

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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.