Home / 130,783.45-196,174.14-86,607.88

Finding the Fourth Proportional to 130,783.45, 196,174.14 and 86,607.88

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Solution

The fourth proportional to 130,783.45, 196,174.14 and 86,607.88 is: 129,911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,783.45 : 196,174.14 = 86,607.88 : x
  2. Step 2: Convert to fraction form
    130,783.45/196,174.14 = 86,607.88/x
  3. Step 3: Cross multiply
    130,783.45x = 196,174.14 × 86,607.88
  4. Step 4: Simplify right side
    130,783.45x = 16,990,226,376.22
  5. Step 5: Solve for x
    x = 16,990,226,376.22/130,783.45
  6. Step 6: Final answer
    x = 129,911.13

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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.