Home / 102,985.98-154,503.63-42,981.09

Finding the Fourth Proportional to 102,985.98, 154,503.63 and 42,981.09

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Solution

The fourth proportional to 102,985.98, 154,503.63 and 42,981.09 is: 64,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,985.98 : 154,503.63 = 42,981.09 : x
  2. Step 2: Convert to fraction form
    102,985.98/154,503.63 = 42,981.09/x
  3. Step 3: Cross multiply
    102,985.98x = 154,503.63 × 42,981.09
  4. Step 4: Simplify right side
    102,985.98x = 6,640,734,426.36
  5. Step 5: Solve for x
    x = 6,640,734,426.36/102,985.98
  6. Step 6: Final answer
    x = 64,481.93

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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.