Home / 145,013.45-200,119.93-81,352.62

Finding the Fourth Proportional to 145,013.45, 200,119.93 and 81,352.62

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Solution

The fourth proportional to 145,013.45, 200,119.93 and 81,352.62 is: 112,267.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,013.45 : 200,119.93 = 81,352.62 : x
  2. Step 2: Convert to fraction form
    145,013.45/200,119.93 = 81,352.62/x
  3. Step 3: Cross multiply
    145,013.45x = 200,119.93 × 81,352.62
  4. Step 4: Simplify right side
    145,013.45x = 16,280,279,415.74
  5. Step 5: Solve for x
    x = 16,280,279,415.74/145,013.45
  6. Step 6: Final answer
    x = 112,267.37

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1.5x scale

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.