Home / 142,137.01-196,143.91-77,605.06

Finding the Fourth Proportional to 142,137.01, 196,143.91 and 77,605.06

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Solution

The fourth proportional to 142,137.01, 196,143.91 and 77,605.06 is: 107,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,137.01 : 196,143.91 = 77,605.06 : x
  2. Step 2: Convert to fraction form
    142,137.01/196,143.91 = 77,605.06/x
  3. Step 3: Cross multiply
    142,137.01x = 196,143.91 × 77,605.06
  4. Step 4: Simplify right side
    142,137.01x = 15,221,759,904.18
  5. Step 5: Solve for x
    x = 15,221,759,904.18/142,137.01
  6. Step 6: Final answer
    x = 107,092.16

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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.