Home / 104,065.12-143,609.36-56,318.40

Finding the Fourth Proportional to 104,065.12, 143,609.36 and 56,318.40

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Solution

The fourth proportional to 104,065.12, 143,609.36 and 56,318.40 is: 77,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,065.12 : 143,609.36 = 56,318.40 : x
  2. Step 2: Convert to fraction form
    104,065.12/143,609.36 = 56,318.40/x
  3. Step 3: Cross multiply
    104,065.12x = 143,609.36 × 56,318.40
  4. Step 4: Simplify right side
    104,065.12x = 8,087,849,380.22
  5. Step 5: Solve for x
    x = 8,087,849,380.22/104,065.12
  6. Step 6: Final answer
    x = 77,719.12

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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.