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Finding the Fourth Proportional to 145,285.52, 200,590.86 and 90,920.34

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Solution

The fourth proportional to 145,285.52, 200,590.86 and 90,920.34 is: 125,530.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,285.52 : 200,590.86 = 90,920.34 : x
  2. Step 2: Convert to fraction form
    145,285.52/200,590.86 = 90,920.34/x
  3. Step 3: Cross multiply
    145,285.52x = 200,590.86 × 90,920.34
  4. Step 4: Simplify right side
    145,285.52x = 18,237,789,192.09
  5. Step 5: Solve for x
    x = 18,237,789,192.09/145,285.52
  6. Step 6: Final answer
    x = 125,530.67

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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.