Home / 147,621-221,283.46-76,503.81

Finding the Fourth Proportional to 147,621, 221,283.46 and 76,503.81

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Solution

The fourth proportional to 147,621, 221,283.46 and 76,503.81 is: 114,678.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,621 : 221,283.46 = 76,503.81 : x
  2. Step 2: Convert to fraction form
    147,621/221,283.46 = 76,503.81/x
  3. Step 3: Cross multiply
    147,621x = 221,283.46 × 76,503.81
  4. Step 4: Simplify right side
    147,621x = 16,929,027,779.98
  5. Step 5: Solve for x
    x = 16,929,027,779.98/147,621
  6. Step 6: Final answer
    x = 114,678.99

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1.5x scale

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.