Home / 103,095.06-142,339.70-79,179

Finding the Fourth Proportional to 103,095.06, 142,339.70 and 79,179

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Solution

The fourth proportional to 103,095.06, 142,339.70 and 79,179 is: 109,319.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,095.06 : 142,339.70 = 79,179 : x
  2. Step 2: Convert to fraction form
    103,095.06/142,339.70 = 79,179/x
  3. Step 3: Cross multiply
    103,095.06x = 142,339.70 × 79,179
  4. Step 4: Simplify right side
    103,095.06x = 11,270,315,106.30
  5. Step 5: Solve for x
    x = 11,270,315,106.30/103,095.06
  6. Step 6: Final answer
    x = 109,319.64

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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.