Home / 123,319.77-170,181.32-66,731.01

Finding the Fourth Proportional to 123,319.77, 170,181.32 and 66,731.01

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Solution

The fourth proportional to 123,319.77, 170,181.32 and 66,731.01 is: 92,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,319.77 : 170,181.32 = 66,731.01 : x
  2. Step 2: Convert to fraction form
    123,319.77/170,181.32 = 66,731.01/x
  3. Step 3: Cross multiply
    123,319.77x = 170,181.32 × 66,731.01
  4. Step 4: Simplify right side
    123,319.77x = 11,356,371,033.08
  5. Step 5: Solve for x
    x = 11,356,371,033.08/123,319.77
  6. Step 6: Final answer
    x = 92,088.81

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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.