Home / 147,628.40-221,442.60-100,389.20

Finding the Fourth Proportional to 147,628.40, 221,442.60 and 100,389.20

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Solution

The fourth proportional to 147,628.40, 221,442.60 and 100,389.20 is: 150,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,628.40 : 221,442.60 = 100,389.20 : x
  2. Step 2: Convert to fraction form
    147,628.40/221,442.60 = 100,389.20/x
  3. Step 3: Cross multiply
    147,628.40x = 221,442.60 × 100,389.20
  4. Step 4: Simplify right side
    147,628.40x = 22,230,445,459.92
  5. Step 5: Solve for x
    x = 22,230,445,459.92/147,628.40
  6. Step 6: Final answer
    x = 150,583.80

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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.