Home / 131,210.10-196,487.10-86,595.30

Finding the Fourth Proportional to 131,210.10, 196,487.10 and 86,595.30

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Solution

The fourth proportional to 131,210.10, 196,487.10 and 86,595.30 is: 129,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,210.10 : 196,487.10 = 86,595.30 : x
  2. Step 2: Convert to fraction form
    131,210.10/196,487.10 = 86,595.30/x
  3. Step 3: Cross multiply
    131,210.10x = 196,487.10 × 86,595.30
  4. Step 4: Simplify right side
    131,210.10x = 17,014,859,370.63
  5. Step 5: Solve for x
    x = 17,014,859,370.63/131,210.10
  6. Step 6: Final answer
    x = 129,676.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.