Home / 142,809.89-197,085.35-79,146.32

Finding the Fourth Proportional to 142,809.89, 197,085.35 and 79,146.32

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Solution

The fourth proportional to 142,809.89, 197,085.35 and 79,146.32 is: 109,226.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,809.89 : 197,085.35 = 79,146.32 : x
  2. Step 2: Convert to fraction form
    142,809.89/197,085.35 = 79,146.32/x
  3. Step 3: Cross multiply
    142,809.89x = 197,085.35 × 79,146.32
  4. Step 4: Simplify right side
    142,809.89x = 15,598,579,390.85
  5. Step 5: Solve for x
    x = 15,598,579,390.85/142,809.89
  6. Step 6: Final answer
    x = 109,226.19

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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.