Home / 190,415.04-285,556.80-78,063.36

Finding the Fourth Proportional to 190,415.04, 285,556.80 and 78,063.36

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Solution

The fourth proportional to 190,415.04, 285,556.80 and 78,063.36 is: 117,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,415.04 : 285,556.80 = 78,063.36 : x
  2. Step 2: Convert to fraction form
    190,415.04/285,556.80 = 78,063.36/x
  3. Step 3: Cross multiply
    190,415.04x = 285,556.80 × 78,063.36
  4. Step 4: Simplify right side
    190,415.04x = 22,291,523,278.85
  5. Step 5: Solve for x
    x = 22,291,523,278.85/190,415.04
  6. Step 6: Final answer
    x = 117,068.08

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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.