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Finding the Fourth Proportional to 153,480.90, 211,810.02 and 85,497.86

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Solution

The fourth proportional to 153,480.90, 211,810.02 and 85,497.86 is: 117,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,480.90 : 211,810.02 = 85,497.86 : x
  2. Step 2: Convert to fraction form
    153,480.90/211,810.02 = 85,497.86/x
  3. Step 3: Cross multiply
    153,480.90x = 211,810.02 × 85,497.86
  4. Step 4: Simplify right side
    153,480.90x = 18,109,303,436.56
  5. Step 5: Solve for x
    x = 18,109,303,436.56/153,480.90
  6. Step 6: Final answer
    x = 117,990.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.