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Finding the Fourth Proportional to 161,986.40, 242,801.40 and 56,751.20

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Solution

The fourth proportional to 161,986.40, 242,801.40 and 56,751.20 is: 85,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,986.40 : 242,801.40 = 56,751.20 : x
  2. Step 2: Convert to fraction form
    161,986.40/242,801.40 = 56,751.20/x
  3. Step 3: Cross multiply
    161,986.40x = 242,801.40 × 56,751.20
  4. Step 4: Simplify right side
    161,986.40x = 13,779,270,811.68
  5. Step 5: Solve for x
    x = 13,779,270,811.68/161,986.40
  6. Step 6: Final answer
    x = 85,064.37

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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.