Home / 210,660.76-290,678.25-120,018.52

Finding the Fourth Proportional to 210,660.76, 290,678.25 and 120,018.52

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Solution

The fourth proportional to 210,660.76, 290,678.25 and 120,018.52 is: 165,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,660.76 : 290,678.25 = 120,018.52 : x
  2. Step 2: Convert to fraction form
    210,660.76/290,678.25 = 120,018.52/x
  3. Step 3: Cross multiply
    210,660.76x = 290,678.25 × 120,018.52
  4. Step 4: Simplify right side
    210,660.76x = 34,886,773,361.19
  5. Step 5: Solve for x
    x = 34,886,773,361.19/210,660.76
  6. Step 6: Final answer
    x = 165,606.42

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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.