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Finding the Fourth Proportional to 145,608.88, 200,946.72 and 81,950.80

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Solution

The fourth proportional to 145,608.88, 200,946.72 and 81,950.80 is: 113,095.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,608.88 : 200,946.72 = 81,950.80 : x
  2. Step 2: Convert to fraction form
    145,608.88/200,946.72 = 81,950.80/x
  3. Step 3: Cross multiply
    145,608.88x = 200,946.72 × 81,950.80
  4. Step 4: Simplify right side
    145,608.88x = 16,467,744,461.38
  5. Step 5: Solve for x
    x = 16,467,744,461.38/145,608.88
  6. Step 6: Final answer
    x = 113,095.74

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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.