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Finding the Fourth Proportional to 161,804.10, 242,706.15 and 90,945.30

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Solution

The fourth proportional to 161,804.10, 242,706.15 and 90,945.30 is: 136,417.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,804.10 : 242,706.15 = 90,945.30 : x
  2. Step 2: Convert to fraction form
    161,804.10/242,706.15 = 90,945.30/x
  3. Step 3: Cross multiply
    161,804.10x = 242,706.15 × 90,945.30
  4. Step 4: Simplify right side
    161,804.10x = 22,072,983,623.60
  5. Step 5: Solve for x
    x = 22,072,983,623.60/161,804.10
  6. Step 6: Final answer
    x = 136,417.95

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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.