Home / 143,212.40-197,630.16-79,548.80

Finding the Fourth Proportional to 143,212.40, 197,630.16 and 79,548.80

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Solution

The fourth proportional to 143,212.40, 197,630.16 and 79,548.80 is: 109,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,212.40 : 197,630.16 = 79,548.80 : x
  2. Step 2: Convert to fraction form
    143,212.40/197,630.16 = 79,548.80/x
  3. Step 3: Cross multiply
    143,212.40x = 197,630.16 × 79,548.80
  4. Step 4: Simplify right side
    143,212.40x = 15,721,242,071.81
  5. Step 5: Solve for x
    x = 15,721,242,071.81/143,212.40
  6. Step 6: Final answer
    x = 109,775.70

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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.