Home / 97,929-135,183.36-66,140.96

Finding the Fourth Proportional to 97,929, 135,183.36 and 66,140.96

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Solution

The fourth proportional to 97,929, 135,183.36 and 66,140.96 is: 91,302.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,929 : 135,183.36 = 66,140.96 : x
  2. Step 2: Convert to fraction form
    97,929/135,183.36 = 66,140.96/x
  3. Step 3: Cross multiply
    97,929x = 135,183.36 × 66,140.96
  4. Step 4: Simplify right side
    97,929x = 8,941,156,530.51
  5. Step 5: Solve for x
    x = 8,941,156,530.51/97,929
  6. Step 6: Final answer
    x = 91,302.44

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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.