Home / 115,415.45-173,018.69-45,275.93

Finding the Fourth Proportional to 115,415.45, 173,018.69 and 45,275.93

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Solution

The fourth proportional to 115,415.45, 173,018.69 and 45,275.93 is: 67,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,415.45 : 173,018.69 = 45,275.93 : x
  2. Step 2: Convert to fraction form
    115,415.45/173,018.69 = 45,275.93/x
  3. Step 3: Cross multiply
    115,415.45x = 173,018.69 × 45,275.93
  4. Step 4: Simplify right side
    115,415.45x = 7,833,581,870.75
  5. Step 5: Solve for x
    x = 7,833,581,870.75/115,415.45
  6. Step 6: Final answer
    x = 67,872.90

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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.