Home / 105,169.74-145,136.70-57,423.45

Finding the Fourth Proportional to 105,169.74, 145,136.70 and 57,423.45

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Solution

The fourth proportional to 105,169.74, 145,136.70 and 57,423.45 is: 79,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,169.74 : 145,136.70 = 57,423.45 : x
  2. Step 2: Convert to fraction form
    105,169.74/145,136.70 = 57,423.45/x
  3. Step 3: Cross multiply
    105,169.74x = 145,136.70 × 57,423.45
  4. Step 4: Simplify right side
    105,169.74x = 8,334,250,035.62
  5. Step 5: Solve for x
    x = 8,334,250,035.62/105,169.74
  6. Step 6: Final answer
    x = 79,245.70

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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.