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Finding the Fourth Proportional to 145,094.49, 200,239.29 and 81,432.27

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Solution

The fourth proportional to 145,094.49, 200,239.29 and 81,432.27 is: 112,381.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,094.49 : 200,239.29 = 81,432.27 : x
  2. Step 2: Convert to fraction form
    145,094.49/200,239.29 = 81,432.27/x
  3. Step 3: Cross multiply
    145,094.49x = 200,239.29 × 81,432.27
  4. Step 4: Simplify right side
    145,094.49x = 16,305,939,927.89
  5. Step 5: Solve for x
    x = 16,305,939,927.89/145,094.49
  6. Step 6: Final answer
    x = 112,381.52

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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.