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Finding the Fourth Proportional to 161,901.80, 242,852.70 and 98,916.20

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Solution

The fourth proportional to 161,901.80, 242,852.70 and 98,916.20 is: 148,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,901.80 : 242,852.70 = 98,916.20 : x
  2. Step 2: Convert to fraction form
    161,901.80/242,852.70 = 98,916.20/x
  3. Step 3: Cross multiply
    161,901.80x = 242,852.70 × 98,916.20
  4. Step 4: Simplify right side
    161,901.80x = 24,022,066,243.74
  5. Step 5: Solve for x
    x = 24,022,066,243.74/161,901.80
  6. Step 6: Final answer
    x = 148,374.30

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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.