Home / 142,603.20-196,730.64-85,983.12

Finding the Fourth Proportional to 142,603.20, 196,730.64 and 85,983.12

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Solution

The fourth proportional to 142,603.20, 196,730.64 and 85,983.12 is: 118,619.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,603.20 : 196,730.64 = 85,983.12 : x
  2. Step 2: Convert to fraction form
    142,603.20/196,730.64 = 85,983.12/x
  3. Step 3: Cross multiply
    142,603.20x = 196,730.64 × 85,983.12
  4. Step 4: Simplify right side
    142,603.20x = 16,915,514,226.80
  5. Step 5: Solve for x
    x = 16,915,514,226.80/142,603.20
  6. Step 6: Final answer
    x = 118,619.46

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1.5x scale

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.