Home / 130,783.06-196,173.64-86,607.55

Finding the Fourth Proportional to 130,783.06, 196,173.64 and 86,607.55

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Solution

The fourth proportional to 130,783.06, 196,173.64 and 86,607.55 is: 129,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,783.06 : 196,173.64 = 86,607.55 : x
  2. Step 2: Convert to fraction form
    130,783.06/196,173.64 = 86,607.55/x
  3. Step 3: Cross multiply
    130,783.06x = 196,173.64 × 86,607.55
  4. Step 4: Simplify right side
    130,783.06x = 16,990,117,952.81
  5. Step 5: Solve for x
    x = 16,990,117,952.81/130,783.06
  6. Step 6: Final answer
    x = 129,910.70

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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.