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Finding the Fourth Proportional to 161,715.70, 243,010.95 and 142,470.10

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Solution

The fourth proportional to 161,715.70, 243,010.95 and 142,470.10 is: 214,090.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,715.70 : 243,010.95 = 142,470.10 : x
  2. Step 2: Convert to fraction form
    161,715.70/243,010.95 = 142,470.10/x
  3. Step 3: Cross multiply
    161,715.70x = 243,010.95 × 142,470.10
  4. Step 4: Simplify right side
    161,715.70x = 34,621,794,347.60
  5. Step 5: Solve for x
    x = 34,621,794,347.60/161,715.70
  6. Step 6: Final answer
    x = 214,090.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.