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Finding the Fourth Proportional to 192,603.60, 288,973.61 and 85,977.63

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Solution

The fourth proportional to 192,603.60, 288,973.61 and 85,977.63 is: 128,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,603.60 : 288,973.61 = 85,977.63 : x
  2. Step 2: Convert to fraction form
    192,603.60/288,973.61 = 85,977.63/x
  3. Step 3: Cross multiply
    192,603.60x = 288,973.61 × 85,977.63
  4. Step 4: Simplify right side
    192,603.60x = 24,845,265,690.46
  5. Step 5: Solve for x
    x = 24,845,265,690.46/192,603.60
  6. Step 6: Final answer
    x = 128,996.89

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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.