Home / 106,898.28-147,509.58-72,372.78

Finding the Fourth Proportional to 106,898.28, 147,509.58 and 72,372.78

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Solution

The fourth proportional to 106,898.28, 147,509.58 and 72,372.78 is: 99,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,898.28 : 147,509.58 = 72,372.78 : x
  2. Step 2: Convert to fraction form
    106,898.28/147,509.58 = 72,372.78/x
  3. Step 3: Cross multiply
    106,898.28x = 147,509.58 × 72,372.78
  4. Step 4: Simplify right side
    106,898.28x = 10,675,678,381.23
  5. Step 5: Solve for x
    x = 10,675,678,381.23/106,898.28
  6. Step 6: Final answer
    x = 99,867.63

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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.