Home / 147,579.81-221,434.52-77,442.72

Finding the Fourth Proportional to 147,579.81, 221,434.52 and 77,442.72

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Solution

The fourth proportional to 147,579.81, 221,434.52 and 77,442.72 is: 116,198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,579.81 : 221,434.52 = 77,442.72 : x
  2. Step 2: Convert to fraction form
    147,579.81/221,434.52 = 77,442.72/x
  3. Step 3: Cross multiply
    147,579.81x = 221,434.52 × 77,442.72
  4. Step 4: Simplify right side
    147,579.81x = 17,148,491,143.48
  5. Step 5: Solve for x
    x = 17,148,491,143.48/147,579.81
  6. Step 6: Final answer
    x = 116,198.08

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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.