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Finding the Fourth Proportional to 110,886.21, 153,011.16 and 65,565.90

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Solution

The fourth proportional to 110,886.21, 153,011.16 and 65,565.90 is: 90,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,886.21 : 153,011.16 = 65,565.90 : x
  2. Step 2: Convert to fraction form
    110,886.21/153,011.16 = 65,565.90/x
  3. Step 3: Cross multiply
    110,886.21x = 153,011.16 × 65,565.90
  4. Step 4: Simplify right side
    110,886.21x = 10,032,314,415.44
  5. Step 5: Solve for x
    x = 10,032,314,415.44/110,886.21
  6. Step 6: Final answer
    x = 90,473.96

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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.