Home / 190,445.24-285,796.92-78,145.76

Finding the Fourth Proportional to 190,445.24, 285,796.92 and 78,145.76

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Solution

The fourth proportional to 190,445.24, 285,796.92 and 78,145.76 is: 117,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,445.24 : 285,796.92 = 78,145.76 : x
  2. Step 2: Convert to fraction form
    190,445.24/285,796.92 = 78,145.76/x
  3. Step 3: Cross multiply
    190,445.24x = 285,796.92 × 78,145.76
  4. Step 4: Simplify right side
    190,445.24x = 22,333,817,519.06
  5. Step 5: Solve for x
    x = 22,333,817,519.06/190,445.24
  6. Step 6: Final answer
    x = 117,271.60

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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.