Home / 197,133-272,005.45-120,669.40

Finding the Fourth Proportional to 197,133, 272,005.45 and 120,669.40

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Solution

The fourth proportional to 197,133, 272,005.45 and 120,669.40 is: 166,500.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,133 : 272,005.45 = 120,669.40 : x
  2. Step 2: Convert to fraction form
    197,133/272,005.45 = 120,669.40/x
  3. Step 3: Cross multiply
    197,133x = 272,005.45 × 120,669.40
  4. Step 4: Simplify right side
    197,133x = 32,822,734,448.23
  5. Step 5: Solve for x
    x = 32,822,734,448.23/197,133
  6. Step 6: Final answer
    x = 166,500.46

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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.