Home / 143,123.04-197,495.36-79,453.92

Finding the Fourth Proportional to 143,123.04, 197,495.36 and 79,453.92

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Solution

The fourth proportional to 143,123.04, 197,495.36 and 79,453.92 is: 109,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,123.04 : 197,495.36 = 79,453.92 : x
  2. Step 2: Convert to fraction form
    143,123.04/197,495.36 = 79,453.92/x
  3. Step 3: Cross multiply
    143,123.04x = 197,495.36 × 79,453.92
  4. Step 4: Simplify right side
    143,123.04x = 15,691,780,533.81
  5. Step 5: Solve for x
    x = 15,691,780,533.81/143,123.04
  6. Step 6: Final answer
    x = 109,638.40

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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.