Home / 210,931.84-291,169.92-138,362.32

Finding the Fourth Proportional to 210,931.84, 291,169.92 and 138,362.32

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Solution

The fourth proportional to 210,931.84, 291,169.92 and 138,362.32 is: 190,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,931.84 : 291,169.92 = 138,362.32 : x
  2. Step 2: Convert to fraction form
    210,931.84/291,169.92 = 138,362.32/x
  3. Step 3: Cross multiply
    210,931.84x = 291,169.92 × 138,362.32
  4. Step 4: Simplify right side
    210,931.84x = 40,286,945,645.41
  5. Step 5: Solve for x
    x = 40,286,945,645.41/210,931.84
  6. Step 6: Final answer
    x = 190,995.09

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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.