Home / 140,136.61-193,392.63-76,478.50

Finding the Fourth Proportional to 140,136.61, 193,392.63 and 76,478.50

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Solution

The fourth proportional to 140,136.61, 193,392.63 and 76,478.50 is: 105,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,136.61 : 193,392.63 = 76,478.50 : x
  2. Step 2: Convert to fraction form
    140,136.61/193,392.63 = 76,478.50/x
  3. Step 3: Cross multiply
    140,136.61x = 193,392.63 × 76,478.50
  4. Step 4: Simplify right side
    140,136.61x = 14,790,376,904.10
  5. Step 5: Solve for x
    x = 14,790,376,904.10/140,136.61
  6. Step 6: Final answer
    x = 105,542.57

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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.