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Finding the Fourth Proportional to 104,718.62, 157,143.56 and 42,389.12

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Solution

The fourth proportional to 104,718.62, 157,143.56 and 42,389.12 is: 63,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,718.62 : 157,143.56 = 42,389.12 : x
  2. Step 2: Convert to fraction form
    104,718.62/157,143.56 = 42,389.12/x
  3. Step 3: Cross multiply
    104,718.62x = 157,143.56 × 42,389.12
  4. Step 4: Simplify right side
    104,718.62x = 6,661,177,402.98
  5. Step 5: Solve for x
    x = 6,661,177,402.98/104,718.62
  6. Step 6: Final answer
    x = 63,610.25

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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.