Home / 129,688.93-194,551.59-45,429.80

Finding the Fourth Proportional to 129,688.93, 194,551.59 and 45,429.80

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Solution

The fourth proportional to 129,688.93, 194,551.59 and 45,429.80 is: 68,151.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,688.93 : 194,551.59 = 45,429.80 : x
  2. Step 2: Convert to fraction form
    129,688.93/194,551.59 = 45,429.80/x
  3. Step 3: Cross multiply
    129,688.93x = 194,551.59 × 45,429.80
  4. Step 4: Simplify right side
    129,688.93x = 8,838,439,823.38
  5. Step 5: Solve for x
    x = 8,838,439,823.38/129,688.93
  6. Step 6: Final answer
    x = 68,151.07

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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.