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Finding the Fourth Proportional to 86,291.64, 130,247.82 and 86,291.64

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Solution

The fourth proportional to 86,291.64, 130,247.82 and 86,291.64 is: 130,247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,291.64 : 130,247.82 = 86,291.64 : x
  2. Step 2: Convert to fraction form
    86,291.64/130,247.82 = 86,291.64/x
  3. Step 3: Cross multiply
    86,291.64x = 130,247.82 × 86,291.64
  4. Step 4: Simplify right side
    86,291.64x = 11,239,297,994.22
  5. Step 5: Solve for x
    x = 11,239,297,994.22/86,291.64
  6. Step 6: Final answer
    x = 130,247.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.