Home / 121,679.52-182,136.90-77,356.32

Finding the Fourth Proportional to 121,679.52, 182,136.90 and 77,356.32

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Solution

The fourth proportional to 121,679.52, 182,136.90 and 77,356.32 is: 115,791.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,679.52 : 182,136.90 = 77,356.32 : x
  2. Step 2: Convert to fraction form
    121,679.52/182,136.90 = 77,356.32/x
  3. Step 3: Cross multiply
    121,679.52x = 182,136.90 × 77,356.32
  4. Step 4: Simplify right side
    121,679.52x = 14,089,440,320.21
  5. Step 5: Solve for x
    x = 14,089,440,320.21/121,679.52
  6. Step 6: Final answer
    x = 115,791.39

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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.