Home / 142,988.40-197,347.68-79,346.64

Finding the Fourth Proportional to 142,988.40, 197,347.68 and 79,346.64

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Solution

The fourth proportional to 142,988.40, 197,347.68 and 79,346.64 is: 109,511.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,988.40 : 197,347.68 = 79,346.64 : x
  2. Step 2: Convert to fraction form
    142,988.40/197,347.68 = 79,346.64/x
  3. Step 3: Cross multiply
    142,988.40x = 197,347.68 × 79,346.64
  4. Step 4: Simplify right side
    142,988.40x = 15,658,875,319.80
  5. Step 5: Solve for x
    x = 15,658,875,319.80/142,988.40
  6. Step 6: Final answer
    x = 109,511.51

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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.