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Finding the Fourth Proportional to 92,888.64, 128,197.28 and 55,162.90

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Solution

The fourth proportional to 92,888.64, 128,197.28 and 55,162.90 is: 76,131.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,888.64 : 128,197.28 = 55,162.90 : x
  2. Step 2: Convert to fraction form
    92,888.64/128,197.28 = 55,162.90/x
  3. Step 3: Cross multiply
    92,888.64x = 128,197.28 × 55,162.90
  4. Step 4: Simplify right side
    92,888.64x = 7,071,733,736.91
  5. Step 5: Solve for x
    x = 7,071,733,736.91/92,888.64
  6. Step 6: Final answer
    x = 76,131.31

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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.