Home / 145,985.94-201,460.05-78,917.94

Finding the Fourth Proportional to 145,985.94, 201,460.05 and 78,917.94

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Solution

The fourth proportional to 145,985.94, 201,460.05 and 78,917.94 is: 108,906.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,985.94 : 201,460.05 = 78,917.94 : x
  2. Step 2: Convert to fraction form
    145,985.94/201,460.05 = 78,917.94/x
  3. Step 3: Cross multiply
    145,985.94x = 201,460.05 × 78,917.94
  4. Step 4: Simplify right side
    145,985.94x = 15,898,812,138.30
  5. Step 5: Solve for x
    x = 15,898,812,138.30/145,985.94
  6. Step 6: Final answer
    x = 108,906.46

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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.