Home / 112,919.64-155,802.06-70,462.68

Finding the Fourth Proportional to 112,919.64, 155,802.06 and 70,462.68

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Solution

The fourth proportional to 112,919.64, 155,802.06 and 70,462.68 is: 97,221.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,919.64 : 155,802.06 = 70,462.68 : x
  2. Step 2: Convert to fraction form
    112,919.64/155,802.06 = 70,462.68/x
  3. Step 3: Cross multiply
    112,919.64x = 155,802.06 × 70,462.68
  4. Step 4: Simplify right side
    112,919.64x = 10,978,230,697.12
  5. Step 5: Solve for x
    x = 10,978,230,697.12/112,919.64
  6. Step 6: Final answer
    x = 97,221.62

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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.