Home / 78,225.30-117,251.55-43,190.10

Finding the Fourth Proportional to 78,225.30, 117,251.55 and 43,190.10

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Solution

The fourth proportional to 78,225.30, 117,251.55 and 43,190.10 is: 64,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,225.30 : 117,251.55 = 43,190.10 : x
  2. Step 2: Convert to fraction form
    78,225.30/117,251.55 = 43,190.10/x
  3. Step 3: Cross multiply
    78,225.30x = 117,251.55 × 43,190.10
  4. Step 4: Simplify right side
    78,225.30x = 5,064,106,169.66
  5. Step 5: Solve for x
    x = 5,064,106,169.66/78,225.30
  6. Step 6: Final answer
    x = 64,737.45

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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.