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Finding the Fourth Proportional to 200,060.90, 300,172.46 and 87,681.90

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Solution

The fourth proportional to 200,060.90, 300,172.46 and 87,681.90 is: 131,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,060.90 : 300,172.46 = 87,681.90 : x
  2. Step 2: Convert to fraction form
    200,060.90/300,172.46 = 87,681.90/x
  3. Step 3: Cross multiply
    200,060.90x = 300,172.46 × 87,681.90
  4. Step 4: Simplify right side
    200,060.90x = 26,319,692,307.71
  5. Step 5: Solve for x
    x = 26,319,692,307.71/200,060.90
  6. Step 6: Final answer
    x = 131,558.40

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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.