Home / 104,154.30-143,643.51-81,458.10

Finding the Fourth Proportional to 104,154.30, 143,643.51 and 81,458.10

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Solution

The fourth proportional to 104,154.30, 143,643.51 and 81,458.10 is: 112,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,154.30 : 143,643.51 = 81,458.10 : x
  2. Step 2: Convert to fraction form
    104,154.30/143,643.51 = 81,458.10/x
  3. Step 3: Cross multiply
    104,154.30x = 143,643.51 × 81,458.10
  4. Step 4: Simplify right side
    104,154.30x = 11,700,927,401.93
  5. Step 5: Solve for x
    x = 11,700,927,401.93/104,154.30
  6. Step 6: Final answer
    x = 112,342.24

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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.