Home / 140,136.48-193,392.45-76,478.40

Finding the Fourth Proportional to 140,136.48, 193,392.45 and 76,478.40

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Solution

The fourth proportional to 140,136.48, 193,392.45 and 76,478.40 is: 105,542.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.48 : 193,392.45 = 76,478.40 : x
  2. Step 2: Convert to fraction form
    140,136.48/193,392.45 = 76,478.40/x
  3. Step 3: Cross multiply
    140,136.48x = 193,392.45 × 76,478.40
  4. Step 4: Simplify right side
    140,136.48x = 14,790,345,148.08
  5. Step 5: Solve for x
    x = 14,790,345,148.08/140,136.48
  6. Step 6: Final answer
    x = 105,542.43

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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.