Home / 130,973.12-180,744.54-79,289.53

Finding the Fourth Proportional to 130,973.12, 180,744.54 and 79,289.53

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Solution

The fourth proportional to 130,973.12, 180,744.54 and 79,289.53 is: 109,420.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,973.12 : 180,744.54 = 79,289.53 : x
  2. Step 2: Convert to fraction form
    130,973.12/180,744.54 = 79,289.53/x
  3. Step 3: Cross multiply
    130,973.12x = 180,744.54 × 79,289.53
  4. Step 4: Simplify right side
    130,973.12x = 14,331,149,626.67
  5. Step 5: Solve for x
    x = 14,331,149,626.67/130,973.12
  6. Step 6: Final answer
    x = 109,420.54

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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.