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Finding the Fourth Proportional to 92,520.36, 137,968.92 and 91,678.86

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Solution

The fourth proportional to 92,520.36, 137,968.92 and 91,678.86 is: 136,714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,520.36 : 137,968.92 = 91,678.86 : x
  2. Step 2: Convert to fraction form
    92,520.36/137,968.92 = 91,678.86/x
  3. Step 3: Cross multiply
    92,520.36x = 137,968.92 × 91,678.86
  4. Step 4: Simplify right side
    92,520.36x = 12,648,833,301.03
  5. Step 5: Solve for x
    x = 12,648,833,301.03/92,520.36
  6. Step 6: Final answer
    x = 136,714.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.