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Finding the Fourth Proportional to 109,480.80, 164,026.80 and 102,482.40

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Solution

The fourth proportional to 109,480.80, 164,026.80 and 102,482.40 is: 153,541.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,480.80 : 164,026.80 = 102,482.40 : x
  2. Step 2: Convert to fraction form
    109,480.80/164,026.80 = 102,482.40/x
  3. Step 3: Cross multiply
    109,480.80x = 164,026.80 × 102,482.40
  4. Step 4: Simplify right side
    109,480.80x = 16,809,860,128.32
  5. Step 5: Solve for x
    x = 16,809,860,128.32/109,480.80
  6. Step 6: Final answer
    x = 153,541.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.