Home / 197,322.84-272,126.88-129,315.42

Finding the Fourth Proportional to 197,322.84, 272,126.88 and 129,315.42

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Solution

The fourth proportional to 197,322.84, 272,126.88 and 129,315.42 is: 178,338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,322.84 : 272,126.88 = 129,315.42 : x
  2. Step 2: Convert to fraction form
    197,322.84/272,126.88 = 129,315.42/x
  3. Step 3: Cross multiply
    197,322.84x = 272,126.88 × 129,315.42
  4. Step 4: Simplify right side
    197,322.84x = 35,190,201,780.49
  5. Step 5: Solve for x
    x = 35,190,201,780.49/197,322.84
  6. Step 6: Final answer
    x = 178,338.21

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1.5x scale

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.