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Finding the Fourth Proportional to 161,710.90, 242,566.35 and 90,852.10

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Solution

The fourth proportional to 161,710.90, 242,566.35 and 90,852.10 is: 136,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,710.90 : 242,566.35 = 90,852.10 : x
  2. Step 2: Convert to fraction form
    161,710.90/242,566.35 = 90,852.10/x
  3. Step 3: Cross multiply
    161,710.90x = 242,566.35 × 90,852.10
  4. Step 4: Simplify right side
    161,710.90x = 22,037,662,286.84
  5. Step 5: Solve for x
    x = 22,037,662,286.84/161,710.90
  6. Step 6: Final answer
    x = 136,278.15

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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.