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Finding the Fourth Proportional to 163,021.70, 244,605.45 and 78,749.30

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Solution

The fourth proportional to 163,021.70, 244,605.45 and 78,749.30 is: 118,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,021.70 : 244,605.45 = 78,749.30 : x
  2. Step 2: Convert to fraction form
    163,021.70/244,605.45 = 78,749.30/x
  3. Step 3: Cross multiply
    163,021.70x = 244,605.45 × 78,749.30
  4. Step 4: Simplify right side
    163,021.70x = 19,262,507,963.69
  5. Step 5: Solve for x
    x = 19,262,507,963.69/163,021.70
  6. Step 6: Final answer
    x = 118,159.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.