Home / 145,113.76-200,246-81,439.26

Finding the Fourth Proportional to 145,113.76, 200,246 and 81,439.26

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Solution

The fourth proportional to 145,113.76, 200,246 and 81,439.26 is: 112,380.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,113.76 : 200,246 = 81,439.26 : x
  2. Step 2: Convert to fraction form
    145,113.76/200,246 = 81,439.26/x
  3. Step 3: Cross multiply
    145,113.76x = 200,246 × 81,439.26
  4. Step 4: Simplify right side
    145,113.76x = 16,307,886,057.96
  5. Step 5: Solve for x
    x = 16,307,886,057.96/145,113.76
  6. Step 6: Final answer
    x = 112,380.01

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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.