Home / 145,016.45-200,124.07-81,355.62

Finding the Fourth Proportional to 145,016.45, 200,124.07 and 81,355.62

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Solution

The fourth proportional to 145,016.45, 200,124.07 and 81,355.62 is: 112,271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,016.45 : 200,124.07 = 81,355.62 : x
  2. Step 2: Convert to fraction form
    145,016.45/200,124.07 = 81,355.62/x
  3. Step 3: Cross multiply
    145,016.45x = 200,124.07 × 81,355.62
  4. Step 4: Simplify right side
    145,016.45x = 16,281,217,791.77
  5. Step 5: Solve for x
    x = 16,281,217,791.77/145,016.45
  6. Step 6: Final answer
    x = 112,271.52

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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.