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Finding the Fourth Proportional to 162,649.40, 243,974.10 and 136,988.60

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Solution

The fourth proportional to 162,649.40, 243,974.10 and 136,988.60 is: 205,482.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,649.40 : 243,974.10 = 136,988.60 : x
  2. Step 2: Convert to fraction form
    162,649.40/243,974.10 = 136,988.60/x
  3. Step 3: Cross multiply
    162,649.40x = 243,974.10 × 136,988.60
  4. Step 4: Simplify right side
    162,649.40x = 33,421,670,395.26
  5. Step 5: Solve for x
    x = 33,421,670,395.26/162,649.40
  6. Step 6: Final answer
    x = 205,482.90

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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.