Home / 105,136.92-145,141.02-66,934.44

Finding the Fourth Proportional to 105,136.92, 145,141.02 and 66,934.44

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Solution

The fourth proportional to 105,136.92, 145,141.02 and 66,934.44 is: 92,402.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,136.92 : 145,141.02 = 66,934.44 : x
  2. Step 2: Convert to fraction form
    105,136.92/145,141.02 = 66,934.44/x
  3. Step 3: Cross multiply
    105,136.92x = 145,141.02 × 66,934.44
  4. Step 4: Simplify right side
    105,136.92x = 9,714,932,894.73
  5. Step 5: Solve for x
    x = 9,714,932,894.73/105,136.92
  6. Step 6: Final answer
    x = 92,402.68

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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.