Home / 102,765.38-141,798.07-57,428.87

Finding the Fourth Proportional to 102,765.38, 141,798.07 and 57,428.87

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Solution

The fourth proportional to 102,765.38, 141,798.07 and 57,428.87 is: 79,241.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,765.38 : 141,798.07 = 57,428.87 : x
  2. Step 2: Convert to fraction form
    102,765.38/141,798.07 = 57,428.87/x
  3. Step 3: Cross multiply
    102,765.38x = 141,798.07 × 57,428.87
  4. Step 4: Simplify right side
    102,765.38x = 8,143,302,075.72
  5. Step 5: Solve for x
    x = 8,143,302,075.72/102,765.38
  6. Step 6: Final answer
    x = 79,241.69

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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.