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Finding the Fourth Proportional to 133,070.40, 183,621.60 and 79,358.40

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Solution

The fourth proportional to 133,070.40, 183,621.60 and 79,358.40 is: 109,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,070.40 : 183,621.60 = 79,358.40 : x
  2. Step 2: Convert to fraction form
    133,070.40/183,621.60 = 79,358.40/x
  3. Step 3: Cross multiply
    133,070.40x = 183,621.60 × 79,358.40
  4. Step 4: Simplify right side
    133,070.40x = 14,571,916,381.44
  5. Step 5: Solve for x
    x = 14,571,916,381.44/133,070.40
  6. Step 6: Final answer
    x = 109,505.32

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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.