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Finding the Fourth Proportional to 128,130.66, 192,237.10 and 61,575.59

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Solution

The fourth proportional to 128,130.66, 192,237.10 and 61,575.59 is: 92,383.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,130.66 : 192,237.10 = 61,575.59 : x
  2. Step 2: Convert to fraction form
    128,130.66/192,237.10 = 61,575.59/x
  3. Step 3: Cross multiply
    128,130.66x = 192,237.10 × 61,575.59
  4. Step 4: Simplify right side
    128,130.66x = 11,837,113,179.04
  5. Step 5: Solve for x
    x = 11,837,113,179.04/128,130.66
  6. Step 6: Final answer
    x = 92,383.14

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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.