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Finding the Fourth Proportional to 200,657.61, 276,812.10 and 120,068.91

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Solution

The fourth proportional to 200,657.61, 276,812.10 and 120,068.91 is: 165,638.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,657.61 : 276,812.10 = 120,068.91 : x
  2. Step 2: Convert to fraction form
    200,657.61/276,812.10 = 120,068.91/x
  3. Step 3: Cross multiply
    200,657.61x = 276,812.10 × 120,068.91
  4. Step 4: Simplify right side
    200,657.61x = 33,236,527,121.81
  5. Step 5: Solve for x
    x = 33,236,527,121.81/200,657.61
  6. Step 6: Final answer
    x = 165,638.01

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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.