Home / 212,145.14-292,758.09-157,939.67

Finding the Fourth Proportional to 212,145.14, 292,758.09 and 157,939.67

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Solution

The fourth proportional to 212,145.14, 292,758.09 and 157,939.67 is: 217,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,145.14 : 292,758.09 = 157,939.67 : x
  2. Step 2: Convert to fraction form
    212,145.14/292,758.09 = 157,939.67/x
  3. Step 3: Cross multiply
    212,145.14x = 292,758.09 × 157,939.67
  4. Step 4: Simplify right side
    212,145.14x = 46,238,116,124.43
  5. Step 5: Solve for x
    x = 46,238,116,124.43/212,145.14
  6. Step 6: Final answer
    x = 217,955.10

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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.