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Finding the Fourth Proportional to 117,122.40, 175,448.64 and 70,349.76

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Solution

The fourth proportional to 117,122.40, 175,448.64 and 70,349.76 is: 105,383.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,122.40 : 175,448.64 = 70,349.76 : x
  2. Step 2: Convert to fraction form
    117,122.40/175,448.64 = 70,349.76/x
  3. Step 3: Cross multiply
    117,122.40x = 175,448.64 × 70,349.76
  4. Step 4: Simplify right side
    117,122.40x = 12,342,769,716.33
  5. Step 5: Solve for x
    x = 12,342,769,716.33/117,122.40
  6. Step 6: Final answer
    x = 105,383.51

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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.