Home / 142,970.28-197,322.63-79,328.58

Finding the Fourth Proportional to 142,970.28, 197,322.63 and 79,328.58

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Solution

The fourth proportional to 142,970.28, 197,322.63 and 79,328.58 is: 109,486.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,970.28 : 197,322.63 = 79,328.58 : x
  2. Step 2: Convert to fraction form
    142,970.28/197,322.63 = 79,328.58/x
  3. Step 3: Cross multiply
    142,970.28x = 197,322.63 × 79,328.58
  4. Step 4: Simplify right side
    142,970.28x = 15,653,324,039.77
  5. Step 5: Solve for x
    x = 15,653,324,039.77/142,970.28
  6. Step 6: Final answer
    x = 109,486.56

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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.