Home / 142,352.74-196,439.07-78,686.44

Finding the Fourth Proportional to 142,352.74, 196,439.07 and 78,686.44

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Solution

The fourth proportional to 142,352.74, 196,439.07 and 78,686.44 is: 108,583.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,352.74 : 196,439.07 = 78,686.44 : x
  2. Step 2: Convert to fraction form
    142,352.74/196,439.07 = 78,686.44/x
  3. Step 3: Cross multiply
    142,352.74x = 196,439.07 × 78,686.44
  4. Step 4: Simplify right side
    142,352.74x = 15,457,090,899.19
  5. Step 5: Solve for x
    x = 15,457,090,899.19/142,352.74
  6. Step 6: Final answer
    x = 108,583.02

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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.