Home / 99,015.16-136,644.44-70,788.28

Finding the Fourth Proportional to 99,015.16, 136,644.44 and 70,788.28

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Solution

The fourth proportional to 99,015.16, 136,644.44 and 70,788.28 is: 97,690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,015.16 : 136,644.44 = 70,788.28 : x
  2. Step 2: Convert to fraction form
    99,015.16/136,644.44 = 70,788.28/x
  3. Step 3: Cross multiply
    99,015.16x = 136,644.44 × 70,788.28
  4. Step 4: Simplify right side
    99,015.16x = 9,672,824,879.16
  5. Step 5: Solve for x
    x = 9,672,824,879.16/99,015.16
  6. Step 6: Final answer
    x = 97,690.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.