Home / 142,927.16-197,238.12-78,395.09

Finding the Fourth Proportional to 142,927.16, 197,238.12 and 78,395.09

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Solution

The fourth proportional to 142,927.16, 197,238.12 and 78,395.09 is: 108,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,927.16 : 197,238.12 = 78,395.09 : x
  2. Step 2: Convert to fraction form
    142,927.16/197,238.12 = 78,395.09/x
  3. Step 3: Cross multiply
    142,927.16x = 197,238.12 × 78,395.09
  4. Step 4: Simplify right side
    142,927.16x = 15,462,499,182.64
  5. Step 5: Solve for x
    x = 15,462,499,182.64/142,927.16
  6. Step 6: Final answer
    x = 108,184.47

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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.