Home / 145,200.30-200,455.83-87,849.42

Finding the Fourth Proportional to 145,200.30, 200,455.83 and 87,849.42

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Solution

The fourth proportional to 145,200.30, 200,455.83 and 87,849.42 is: 121,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,200.30 : 200,455.83 = 87,849.42 : x
  2. Step 2: Convert to fraction form
    145,200.30/200,455.83 = 87,849.42/x
  3. Step 3: Cross multiply
    145,200.30x = 200,455.83 × 87,849.42
  4. Step 4: Simplify right side
    145,200.30x = 17,609,928,401.12
  5. Step 5: Solve for x
    x = 17,609,928,401.12/145,200.30
  6. Step 6: Final answer
    x = 121,280.25

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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.