Home / 153,039.80-229,583.44-78,119.36

Finding the Fourth Proportional to 153,039.80, 229,583.44 and 78,119.36

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Solution

The fourth proportional to 153,039.80, 229,583.44 and 78,119.36 is: 117,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,039.80 : 229,583.44 = 78,119.36 : x
  2. Step 2: Convert to fraction form
    153,039.80/229,583.44 = 78,119.36/x
  3. Step 3: Cross multiply
    153,039.80x = 229,583.44 × 78,119.36
  4. Step 4: Simplify right side
    153,039.80x = 17,934,911,399.40
  5. Step 5: Solve for x
    x = 17,934,911,399.40/153,039.80
  6. Step 6: Final answer
    x = 117,191.16

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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.