Home / 157,931.14-217,945.09-86,311.17

Finding the Fourth Proportional to 157,931.14, 217,945.09 and 86,311.17

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Solution

The fourth proportional to 157,931.14, 217,945.09 and 86,311.17 is: 119,109.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,931.14 : 217,945.09 = 86,311.17 : x
  2. Step 2: Convert to fraction form
    157,931.14/217,945.09 = 86,311.17/x
  3. Step 3: Cross multiply
    157,931.14x = 217,945.09 × 86,311.17
  4. Step 4: Simplify right side
    157,931.14x = 18,811,094,192.37
  5. Step 5: Solve for x
    x = 18,811,094,192.37/157,931.14
  6. Step 6: Final answer
    x = 119,109.47

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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.