Home / 142,970.77-197,296.57-79,307.20

Finding the Fourth Proportional to 142,970.77, 197,296.57 and 79,307.20

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Solution

The fourth proportional to 142,970.77, 197,296.57 and 79,307.20 is: 109,442.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,970.77 : 197,296.57 = 79,307.20 : x
  2. Step 2: Convert to fraction form
    142,970.77/197,296.57 = 79,307.20/x
  3. Step 3: Cross multiply
    142,970.77x = 197,296.57 × 79,307.20
  4. Step 4: Simplify right side
    142,970.77x = 15,647,038,536.30
  5. Step 5: Solve for x
    x = 15,647,038,536.30/142,970.77
  6. Step 6: Final answer
    x = 109,442.22

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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.