Home / 103,012.12-154,542.27-31,931.03

Finding the Fourth Proportional to 103,012.12, 154,542.27 and 31,931.03

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Solution

The fourth proportional to 103,012.12, 154,542.27 and 31,931.03 is: 47,904.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,012.12 : 154,542.27 = 31,931.03 : x
  2. Step 2: Convert to fraction form
    103,012.12/154,542.27 = 31,931.03/x
  3. Step 3: Cross multiply
    103,012.12x = 154,542.27 × 31,931.03
  4. Step 4: Simplify right side
    103,012.12x = 4,934,693,859.64
  5. Step 5: Solve for x
    x = 4,934,693,859.64/103,012.12
  6. Step 6: Final answer
    x = 47,904.01

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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.