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Finding the Fourth Proportional to 111,877.08, 154,328.13 and 84,976.98

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Solution

The fourth proportional to 111,877.08, 154,328.13 and 84,976.98 is: 117,220.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,877.08 : 154,328.13 = 84,976.98 : x
  2. Step 2: Convert to fraction form
    111,877.08/154,328.13 = 84,976.98/x
  3. Step 3: Cross multiply
    111,877.08x = 154,328.13 × 84,976.98
  4. Step 4: Simplify right side
    111,877.08x = 13,114,338,416.45
  5. Step 5: Solve for x
    x = 13,114,338,416.45/111,877.08
  6. Step 6: Final answer
    x = 117,220.96

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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.