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Finding the Fourth Proportional to 115,369.40, 159,220.92 and 70,036.88

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Solution

The fourth proportional to 115,369.40, 159,220.92 and 70,036.88 is: 96,657.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,369.40 : 159,220.92 = 70,036.88 : x
  2. Step 2: Convert to fraction form
    115,369.40/159,220.92 = 70,036.88/x
  3. Step 3: Cross multiply
    115,369.40x = 159,220.92 × 70,036.88
  4. Step 4: Simplify right side
    115,369.40x = 11,151,336,467.53
  5. Step 5: Solve for x
    x = 11,151,336,467.53/115,369.40
  6. Step 6: Final answer
    x = 96,657.66

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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.