Home / 155,427.28-214,578.12-102,588.88

Finding the Fourth Proportional to 155,427.28, 214,578.12 and 102,588.88

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Solution

The fourth proportional to 155,427.28, 214,578.12 and 102,588.88 is: 141,631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,427.28 : 214,578.12 = 102,588.88 : x
  2. Step 2: Convert to fraction form
    155,427.28/214,578.12 = 102,588.88/x
  3. Step 3: Cross multiply
    155,427.28x = 214,578.12 × 102,588.88
  4. Step 4: Simplify right side
    155,427.28x = 22,013,329,003.31
  5. Step 5: Solve for x
    x = 22,013,329,003.31/155,427.28
  6. Step 6: Final answer
    x = 141,631.05

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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.