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Finding the Fourth Proportional to 145,818.76, 201,226.08 and 82,152.76

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Solution

The fourth proportional to 145,818.76, 201,226.08 and 82,152.76 is: 113,368.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,818.76 : 201,226.08 = 82,152.76 : x
  2. Step 2: Convert to fraction form
    145,818.76/201,226.08 = 82,152.76/x
  3. Step 3: Cross multiply
    145,818.76x = 201,226.08 × 82,152.76
  4. Step 4: Simplify right side
    145,818.76x = 16,531,277,855.98
  5. Step 5: Solve for x
    x = 16,531,277,855.98/145,818.76
  6. Step 6: Final answer
    x = 113,368.66

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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.