Home / 155,937.70-215,218.29-102,378.07

Finding the Fourth Proportional to 155,937.70, 215,218.29 and 102,378.07

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Solution

The fourth proportional to 155,937.70, 215,218.29 and 102,378.07 is: 141,297.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,937.70 : 215,218.29 = 102,378.07 : x
  2. Step 2: Convert to fraction form
    155,937.70/215,218.29 = 102,378.07/x
  3. Step 3: Cross multiply
    155,937.70x = 215,218.29 × 102,378.07
  4. Step 4: Simplify right side
    155,937.70x = 22,033,633,158.90
  5. Step 5: Solve for x
    x = 22,033,633,158.90/155,937.70
  6. Step 6: Final answer
    x = 141,297.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.