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Finding the Fourth Proportional to 99,111.16, 136,886.92 and 65,270.92

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Solution

The fourth proportional to 99,111.16, 136,886.92 and 65,270.92 is: 90,148.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,111.16 : 136,886.92 = 65,270.92 : x
  2. Step 2: Convert to fraction form
    99,111.16/136,886.92 = 65,270.92/x
  3. Step 3: Cross multiply
    99,111.16x = 136,886.92 × 65,270.92
  4. Step 4: Simplify right side
    99,111.16x = 8,934,734,519.93
  5. Step 5: Solve for x
    x = 8,934,734,519.93/99,111.16
  6. Step 6: Final answer
    x = 90,148.62

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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.