Home / 145,835.52-218,669.85-86,712.54

Finding the Fourth Proportional to 145,835.52, 218,669.85 and 86,712.54

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Solution

The fourth proportional to 145,835.52, 218,669.85 and 86,712.54 is: 130,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,835.52 : 218,669.85 = 86,712.54 : x
  2. Step 2: Convert to fraction form
    145,835.52/218,669.85 = 86,712.54/x
  3. Step 3: Cross multiply
    145,835.52x = 218,669.85 × 86,712.54
  4. Step 4: Simplify right side
    145,835.52x = 18,961,418,114.92
  5. Step 5: Solve for x
    x = 18,961,418,114.92/145,835.52
  6. Step 6: Final answer
    x = 130,019.20

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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.