Home / 99,964.04-149,970.66-70,439.54

Finding the Fourth Proportional to 99,964.04, 149,970.66 and 70,439.54

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Solution

The fourth proportional to 99,964.04, 149,970.66 and 70,439.54 is: 105,676.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,964.04 : 149,970.66 = 70,439.54 : x
  2. Step 2: Convert to fraction form
    99,964.04/149,970.66 = 70,439.54/x
  3. Step 3: Cross multiply
    99,964.04x = 149,970.66 × 70,439.54
  4. Step 4: Simplify right side
    99,964.04x = 10,563,864,303.90
  5. Step 5: Solve for x
    x = 10,563,864,303.90/99,964.04
  6. Step 6: Final answer
    x = 105,676.64

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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.