Home / 157,631.94-217,532.70-86,013.45

Finding the Fourth Proportional to 157,631.94, 217,532.70 and 86,013.45

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Solution

The fourth proportional to 157,631.94, 217,532.70 and 86,013.45 is: 118,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,631.94 : 217,532.70 = 86,013.45 : x
  2. Step 2: Convert to fraction form
    157,631.94/217,532.70 = 86,013.45/x
  3. Step 3: Cross multiply
    157,631.94x = 217,532.70 × 86,013.45
  4. Step 4: Simplify right side
    157,631.94x = 18,710,738,014.82
  5. Step 5: Solve for x
    x = 18,710,738,014.82/157,631.94
  6. Step 6: Final answer
    x = 118,698.90

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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.