Home / 115,307.79-159,064.20-93,821.55

Finding the Fourth Proportional to 115,307.79, 159,064.20 and 93,821.55

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Solution

The fourth proportional to 115,307.79, 159,064.20 and 93,821.55 is: 129,424.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,307.79 : 159,064.20 = 93,821.55 : x
  2. Step 2: Convert to fraction form
    115,307.79/159,064.20 = 93,821.55/x
  3. Step 3: Cross multiply
    115,307.79x = 159,064.20 × 93,821.55
  4. Step 4: Simplify right side
    115,307.79x = 14,923,649,793.51
  5. Step 5: Solve for x
    x = 14,923,649,793.51/115,307.79
  6. Step 6: Final answer
    x = 129,424.47

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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.