Home / 142,984.71-197,342.39-79,343.01

Finding the Fourth Proportional to 142,984.71, 197,342.39 and 79,343.01

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Solution

The fourth proportional to 142,984.71, 197,342.39 and 79,343.01 is: 109,506.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,984.71 : 197,342.39 = 79,343.01 : x
  2. Step 2: Convert to fraction form
    142,984.71/197,342.39 = 79,343.01/x
  3. Step 3: Cross multiply
    142,984.71x = 197,342.39 × 79,343.01
  4. Step 4: Simplify right side
    142,984.71x = 15,657,739,421.55
  5. Step 5: Solve for x
    x = 15,657,739,421.55/142,984.71
  6. Step 6: Final answer
    x = 109,506.39

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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.