Home / 109,143.93-150,618.05-61,397.63

Finding the Fourth Proportional to 109,143.93, 150,618.05 and 61,397.63

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Solution

The fourth proportional to 109,143.93, 150,618.05 and 61,397.63 is: 84,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,143.93 : 150,618.05 = 61,397.63 : x
  2. Step 2: Convert to fraction form
    109,143.93/150,618.05 = 61,397.63/x
  3. Step 3: Cross multiply
    109,143.93x = 150,618.05 × 61,397.63
  4. Step 4: Simplify right side
    109,143.93x = 9,247,590,705.63
  5. Step 5: Solve for x
    x = 9,247,590,705.63/109,143.93
  6. Step 6: Final answer
    x = 84,728.40

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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.