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Finding the Fourth Proportional to 161,748.40, 242,629.80 and 55,130.80

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Solution

The fourth proportional to 161,748.40, 242,629.80 and 55,130.80 is: 82,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,748.40 : 242,629.80 = 55,130.80 : x
  2. Step 2: Convert to fraction form
    161,748.40/242,629.80 = 55,130.80/x
  3. Step 3: Cross multiply
    161,748.40x = 242,629.80 × 55,130.80
  4. Step 4: Simplify right side
    161,748.40x = 13,376,374,977.84
  5. Step 5: Solve for x
    x = 13,376,374,977.84/161,748.40
  6. Step 6: Final answer
    x = 82,698.65

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1.5x scale

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.