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Finding the Fourth Proportional to 145,164.99, 200,337.54 and 80,641.59

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Solution

The fourth proportional to 145,164.99, 200,337.54 and 80,641.59 is: 111,290.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,164.99 : 200,337.54 = 80,641.59 : x
  2. Step 2: Convert to fraction form
    145,164.99/200,337.54 = 80,641.59/x
  3. Step 3: Cross multiply
    145,164.99x = 200,337.54 × 80,641.59
  4. Step 4: Simplify right side
    145,164.99x = 16,155,537,762.29
  5. Step 5: Solve for x
    x = 16,155,537,762.29/145,164.99
  6. Step 6: Final answer
    x = 111,290.87

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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.