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Finding the Fourth Proportional to 134,391.92, 185,468.48 and 77,040.72

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Solution

The fourth proportional to 134,391.92, 185,468.48 and 77,040.72 is: 106,320.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,391.92 : 185,468.48 = 77,040.72 : x
  2. Step 2: Convert to fraction form
    134,391.92/185,468.48 = 77,040.72/x
  3. Step 3: Cross multiply
    134,391.92x = 185,468.48 × 77,040.72
  4. Step 4: Simplify right side
    134,391.92x = 14,288,625,236.51
  5. Step 5: Solve for x
    x = 14,288,625,236.51/134,391.92
  6. Step 6: Final answer
    x = 106,320.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.