Home / 105,296.60-145,430.01-76,743.56

Finding the Fourth Proportional to 105,296.60, 145,430.01 and 76,743.56

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Solution

The fourth proportional to 105,296.60, 145,430.01 and 76,743.56 is: 105,994.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,296.60 : 145,430.01 = 76,743.56 : x
  2. Step 2: Convert to fraction form
    105,296.60/145,430.01 = 76,743.56/x
  3. Step 3: Cross multiply
    105,296.60x = 145,430.01 × 76,743.56
  4. Step 4: Simplify right side
    105,296.60x = 11,160,816,698.24
  5. Step 5: Solve for x
    x = 11,160,816,698.24/105,296.60
  6. Step 6: Final answer
    x = 105,994.08

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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.