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Finding the Fourth Proportional to 86,929.10, 130,102.05 and 86,929.10

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Solution

The fourth proportional to 86,929.10, 130,102.05 and 86,929.10 is: 130,102.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.10 : 130,102.05 = 86,929.10 : x
  2. Step 2: Convert to fraction form
    86,929.10/130,102.05 = 86,929.10/x
  3. Step 3: Cross multiply
    86,929.10x = 130,102.05 × 86,929.10
  4. Step 4: Simplify right side
    86,929.10x = 11,309,654,114.66
  5. Step 5: Solve for x
    x = 11,309,654,114.66/86,929.10
  6. Step 6: Final answer
    x = 130,102.05

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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.