Home / 142,303.08-196,371.84-78,639.52

Finding the Fourth Proportional to 142,303.08, 196,371.84 and 78,639.52

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Solution

The fourth proportional to 142,303.08, 196,371.84 and 78,639.52 is: 108,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,303.08 : 196,371.84 = 78,639.52 : x
  2. Step 2: Convert to fraction form
    142,303.08/196,371.84 = 78,639.52/x
  3. Step 3: Cross multiply
    142,303.08x = 196,371.84 × 78,639.52
  4. Step 4: Simplify right side
    142,303.08x = 15,442,587,239.12
  5. Step 5: Solve for x
    x = 15,442,587,239.12/142,303.08
  6. Step 6: Final answer
    x = 108,519.00

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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.