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Finding the Fourth Proportional to 145,473.05, 200,752.81 and 81,810.84

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Solution

The fourth proportional to 145,473.05, 200,752.81 and 81,810.84 is: 112,898.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,473.05 : 200,752.81 = 81,810.84 : x
  2. Step 2: Convert to fraction form
    145,473.05/200,752.81 = 81,810.84/x
  3. Step 3: Cross multiply
    145,473.05x = 200,752.81 × 81,810.84
  4. Step 4: Simplify right side
    145,473.05x = 16,423,756,566.76
  5. Step 5: Solve for x
    x = 16,423,756,566.76/145,473.05
  6. Step 6: Final answer
    x = 112,898.96

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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.