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Finding the Fourth Proportional to 147,607.80, 221,444.10 and 72,763.80

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Solution

The fourth proportional to 147,607.80, 221,444.10 and 72,763.80 is: 109,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,607.80 : 221,444.10 = 72,763.80 : x
  2. Step 2: Convert to fraction form
    147,607.80/221,444.10 = 72,763.80/x
  3. Step 3: Cross multiply
    147,607.80x = 221,444.10 × 72,763.80
  4. Step 4: Simplify right side
    147,607.80x = 16,113,114,203.58
  5. Step 5: Solve for x
    x = 16,113,114,203.58/147,607.80
  6. Step 6: Final answer
    x = 109,161.67

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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.