Home / 119,739.42-165,153.54-81,430.88

Finding the Fourth Proportional to 119,739.42, 165,153.54 and 81,430.88

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Solution

The fourth proportional to 119,739.42, 165,153.54 and 81,430.88 is: 112,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,739.42 : 165,153.54 = 81,430.88 : x
  2. Step 2: Convert to fraction form
    119,739.42/165,153.54 = 81,430.88/x
  3. Step 3: Cross multiply
    119,739.42x = 165,153.54 × 81,430.88
  4. Step 4: Simplify right side
    119,739.42x = 13,448,597,271.55
  5. Step 5: Solve for x
    x = 13,448,597,271.55/119,739.42
  6. Step 6: Final answer
    x = 112,315.54

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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.