Home / 130,747.86-180,396.18-79,768.89

Finding the Fourth Proportional to 130,747.86, 180,396.18 and 79,768.89

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Solution

The fourth proportional to 130,747.86, 180,396.18 and 79,768.89 is: 110,059.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,747.86 : 180,396.18 = 79,768.89 : x
  2. Step 2: Convert to fraction form
    130,747.86/180,396.18 = 79,768.89/x
  3. Step 3: Cross multiply
    130,747.86x = 180,396.18 × 79,768.89
  4. Step 4: Simplify right side
    130,747.86x = 14,390,003,038.84
  5. Step 5: Solve for x
    x = 14,390,003,038.84/130,747.86
  6. Step 6: Final answer
    x = 110,059.19

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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.