Home / 142,605.20-196,733.40-85,985.12

Finding the Fourth Proportional to 142,605.20, 196,733.40 and 85,985.12

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Solution

The fourth proportional to 142,605.20, 196,733.40 and 85,985.12 is: 118,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,605.20 : 196,733.40 = 85,985.12 : x
  2. Step 2: Convert to fraction form
    142,605.20/196,733.40 = 85,985.12/x
  3. Step 3: Cross multiply
    142,605.20x = 196,733.40 × 85,985.12
  4. Step 4: Simplify right side
    142,605.20x = 16,916,145,007.01
  5. Step 5: Solve for x
    x = 16,916,145,007.01/142,605.20
  6. Step 6: Final answer
    x = 118,622.22

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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.