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Finding the Fourth Proportional to 130,384.50, 179,940.45 and 73,020.90

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Solution

The fourth proportional to 130,384.50, 179,940.45 and 73,020.90 is: 100,774.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,384.50 : 179,940.45 = 73,020.90 : x
  2. Step 2: Convert to fraction form
    130,384.50/179,940.45 = 73,020.90/x
  3. Step 3: Cross multiply
    130,384.50x = 179,940.45 × 73,020.90
  4. Step 4: Simplify right side
    130,384.50x = 13,139,413,605.41
  5. Step 5: Solve for x
    x = 13,139,413,605.41/130,384.50
  6. Step 6: Final answer
    x = 100,774.35

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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.