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Finding the Fourth Proportional to 130,580.51, 195,870.83 and 86,196.89

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Solution

The fourth proportional to 130,580.51, 195,870.83 and 86,196.89 is: 129,295.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,580.51 : 195,870.83 = 86,196.89 : x
  2. Step 2: Convert to fraction form
    130,580.51/195,870.83 = 86,196.89/x
  3. Step 3: Cross multiply
    130,580.51x = 195,870.83 × 86,196.89
  4. Step 4: Simplify right side
    130,580.51x = 16,883,456,387.72
  5. Step 5: Solve for x
    x = 16,883,456,387.72/130,580.51
  6. Step 6: Final answer
    x = 129,295.38

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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.