Home / 105,739.48-145,907.03-60,420.40

Finding the Fourth Proportional to 105,739.48, 145,907.03 and 60,420.40

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Solution

The fourth proportional to 105,739.48, 145,907.03 and 60,420.40 is: 83,372.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,739.48 : 145,907.03 = 60,420.40 : x
  2. Step 2: Convert to fraction form
    105,739.48/145,907.03 = 60,420.40/x
  3. Step 3: Cross multiply
    105,739.48x = 145,907.03 × 60,420.40
  4. Step 4: Simplify right side
    105,739.48x = 8,815,760,234.83
  5. Step 5: Solve for x
    x = 8,815,760,234.83/105,739.48
  6. Step 6: Final answer
    x = 83,372.46

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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.