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Finding the Fourth Proportional to 201,931.40, 302,853.90 and 89,611.40

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Solution

The fourth proportional to 201,931.40, 302,853.90 and 89,611.40 is: 134,397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,931.40 : 302,853.90 = 89,611.40 : x
  2. Step 2: Convert to fraction form
    201,931.40/302,853.90 = 89,611.40/x
  3. Step 3: Cross multiply
    201,931.40x = 302,853.90 × 89,611.40
  4. Step 4: Simplify right side
    201,931.40x = 27,139,161,974.46
  5. Step 5: Solve for x
    x = 27,139,161,974.46/201,931.40
  6. Step 6: Final answer
    x = 134,397.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.