Home / 103,079.13-154,637.15-53,145.82

Finding the Fourth Proportional to 103,079.13, 154,637.15 and 53,145.82

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Solution

The fourth proportional to 103,079.13, 154,637.15 and 53,145.82 is: 79,728.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,079.13 : 154,637.15 = 53,145.82 : x
  2. Step 2: Convert to fraction form
    103,079.13/154,637.15 = 53,145.82/x
  3. Step 3: Cross multiply
    103,079.13x = 154,637.15 × 53,145.82
  4. Step 4: Simplify right side
    103,079.13x = 8,218,317,873.48
  5. Step 5: Solve for x
    x = 8,218,317,873.48/103,079.13
  6. Step 6: Final answer
    x = 79,728.25

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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.