Home / 145,013.28-200,119.69-81,352.44

Finding the Fourth Proportional to 145,013.28, 200,119.69 and 81,352.44

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Solution

The fourth proportional to 145,013.28, 200,119.69 and 81,352.44 is: 112,267.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,013.28 : 200,119.69 = 81,352.44 : x
  2. Step 2: Convert to fraction form
    145,013.28/200,119.69 = 81,352.44/x
  3. Step 3: Cross multiply
    145,013.28x = 200,119.69 × 81,352.44
  4. Step 4: Simplify right side
    145,013.28x = 16,280,225,675.53
  5. Step 5: Solve for x
    x = 16,280,225,675.53/145,013.28
  6. Step 6: Final answer
    x = 112,267.14

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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.