Home / 142,970.58-197,293.86-79,307.28

Finding the Fourth Proportional to 142,970.58, 197,293.86 and 79,307.28

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Solution

The fourth proportional to 142,970.58, 197,293.86 and 79,307.28 is: 109,440.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,970.58 : 197,293.86 = 79,307.28 : x
  2. Step 2: Convert to fraction form
    142,970.58/197,293.86 = 79,307.28/x
  3. Step 3: Cross multiply
    142,970.58x = 197,293.86 × 79,307.28
  4. Step 4: Simplify right side
    142,970.58x = 15,646,839,397.30
  5. Step 5: Solve for x
    x = 15,646,839,397.30/142,970.58
  6. Step 6: Final answer
    x = 109,440.97

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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.