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Finding the Fourth Proportional to 159,989, 240,027.18 and 70,015.36

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Solution

The fourth proportional to 159,989, 240,027.18 and 70,015.36 is: 105,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,989 : 240,027.18 = 70,015.36 : x
  2. Step 2: Convert to fraction form
    159,989/240,027.18 = 70,015.36/x
  3. Step 3: Cross multiply
    159,989x = 240,027.18 × 70,015.36
  4. Step 4: Simplify right side
    159,989x = 16,805,589,417.48
  5. Step 5: Solve for x
    x = 16,805,589,417.48/159,989
  6. Step 6: Final answer
    x = 105,042.16

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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.