Home / 142,605.70-196,734.09-85,985.62

Finding the Fourth Proportional to 142,605.70, 196,734.09 and 85,985.62

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Solution

The fourth proportional to 142,605.70, 196,734.09 and 85,985.62 is: 118,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,605.70 : 196,734.09 = 85,985.62 : x
  2. Step 2: Convert to fraction form
    142,605.70/196,734.09 = 85,985.62/x
  3. Step 3: Cross multiply
    142,605.70x = 196,734.09 × 85,985.62
  4. Step 4: Simplify right side
    142,605.70x = 16,916,302,703.79
  5. Step 5: Solve for x
    x = 16,916,302,703.79/142,605.70
  6. Step 6: Final answer
    x = 118,622.91

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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.