Home / 153,964.15-212,564.31-105,645.45

Finding the Fourth Proportional to 153,964.15, 212,564.31 and 105,645.45

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Solution

The fourth proportional to 153,964.15, 212,564.31 and 105,645.45 is: 145,855.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,964.15 : 212,564.31 = 105,645.45 : x
  2. Step 2: Convert to fraction form
    153,964.15/212,564.31 = 105,645.45/x
  3. Step 3: Cross multiply
    153,964.15x = 212,564.31 × 105,645.45
  4. Step 4: Simplify right side
    153,964.15x = 22,456,452,183.89
  5. Step 5: Solve for x
    x = 22,456,452,183.89/153,964.15
  6. Step 6: Final answer
    x = 145,855.07

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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.