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Finding the Fourth Proportional to 145,392.49, 200,611.95 and 84,951.45

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Solution

The fourth proportional to 145,392.49, 200,611.95 and 84,951.45 is: 117,215.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,392.49 : 200,611.95 = 84,951.45 : x
  2. Step 2: Convert to fraction form
    145,392.49/200,611.95 = 84,951.45/x
  3. Step 3: Cross multiply
    145,392.49x = 200,611.95 × 84,951.45
  4. Step 4: Simplify right side
    145,392.49x = 17,042,276,792.12
  5. Step 5: Solve for x
    x = 17,042,276,792.12/145,392.49
  6. Step 6: Final answer
    x = 117,215.66

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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.