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Finding the Fourth Proportional to 145,280.94, 200,452.40 and 84,816.96

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Solution

The fourth proportional to 145,280.94, 200,452.40 and 84,816.96 is: 117,026.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,280.94 : 200,452.40 = 84,816.96 : x
  2. Step 2: Convert to fraction form
    145,280.94/200,452.40 = 84,816.96/x
  3. Step 3: Cross multiply
    145,280.94x = 200,452.40 × 84,816.96
  4. Step 4: Simplify right side
    145,280.94x = 17,001,763,192.70
  5. Step 5: Solve for x
    x = 17,001,763,192.70/145,280.94
  6. Step 6: Final answer
    x = 117,026.80

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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.