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Finding the Fourth Proportional to 159,109.37, 219,578.81 and 98,699.47

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Solution

The fourth proportional to 159,109.37, 219,578.81 and 98,699.47 is: 136,210.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,109.37 : 219,578.81 = 98,699.47 : x
  2. Step 2: Convert to fraction form
    159,109.37/219,578.81 = 98,699.47/x
  3. Step 3: Cross multiply
    159,109.37x = 219,578.81 × 98,699.47
  4. Step 4: Simplify right side
    159,109.37x = 21,672,312,170.23
  5. Step 5: Solve for x
    x = 21,672,312,170.23/159,109.37
  6. Step 6: Final answer
    x = 136,210.16

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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.