Home / 105,721.55-145,898.64-60,406.91

Finding the Fourth Proportional to 105,721.55, 145,898.64 and 60,406.91

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Solution

The fourth proportional to 105,721.55, 145,898.64 and 60,406.91 is: 83,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,721.55 : 145,898.64 = 60,406.91 : x
  2. Step 2: Convert to fraction form
    105,721.55/145,898.64 = 60,406.91/x
  3. Step 3: Cross multiply
    105,721.55x = 145,898.64 × 60,406.91
  4. Step 4: Simplify right side
    105,721.55x = 8,813,286,823.80
  5. Step 5: Solve for x
    x = 8,813,286,823.80/105,721.55
  6. Step 6: Final answer
    x = 83,363.20

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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.