Home / 158,131.85-237,126.46-78,138.63

Finding the Fourth Proportional to 158,131.85, 237,126.46 and 78,138.63

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Solution

The fourth proportional to 158,131.85, 237,126.46 and 78,138.63 is: 117,172.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,131.85 : 237,126.46 = 78,138.63 : x
  2. Step 2: Convert to fraction form
    158,131.85/237,126.46 = 78,138.63/x
  3. Step 3: Cross multiply
    158,131.85x = 237,126.46 × 78,138.63
  4. Step 4: Simplify right side
    158,131.85x = 18,528,736,721.15
  5. Step 5: Solve for x
    x = 18,528,736,721.15/158,131.85
  6. Step 6: Final answer
    x = 117,172.71

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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.