Home / 115,490.40-173,224.26-78,289.44

Finding the Fourth Proportional to 115,490.40, 173,224.26 and 78,289.44

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Solution

The fourth proportional to 115,490.40, 173,224.26 and 78,289.44 is: 117,426.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,490.40 : 173,224.26 = 78,289.44 : x
  2. Step 2: Convert to fraction form
    115,490.40/173,224.26 = 78,289.44/x
  3. Step 3: Cross multiply
    115,490.40x = 173,224.26 × 78,289.44
  4. Step 4: Simplify right side
    115,490.40x = 13,561,630,309.81
  5. Step 5: Solve for x
    x = 13,561,630,309.81/115,490.40
  6. Step 6: Final answer
    x = 117,426.47

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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.