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Finding the Fourth Proportional to 92,886.32, 128,183.64 and 55,159.76

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Solution

The fourth proportional to 92,886.32, 128,183.64 and 55,159.76 is: 76,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,886.32 : 128,183.64 = 55,159.76 : x
  2. Step 2: Convert to fraction form
    92,886.32/128,183.64 = 55,159.76/x
  3. Step 3: Cross multiply
    92,886.32x = 128,183.64 × 55,159.76
  4. Step 4: Simplify right side
    92,886.32x = 7,070,578,818.33
  5. Step 5: Solve for x
    x = 7,070,578,818.33/92,886.32
  6. Step 6: Final answer
    x = 76,120.78

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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.