Home / 145,127.40-200,250.54-81,467.88

Finding the Fourth Proportional to 145,127.40, 200,250.54 and 81,467.88

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Solution

The fourth proportional to 145,127.40, 200,250.54 and 81,467.88 is: 112,411.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,127.40 : 200,250.54 = 81,467.88 : x
  2. Step 2: Convert to fraction form
    145,127.40/200,250.54 = 81,467.88/x
  3. Step 3: Cross multiply
    145,127.40x = 200,250.54 × 81,467.88
  4. Step 4: Simplify right side
    145,127.40x = 16,313,986,962.66
  5. Step 5: Solve for x
    x = 16,313,986,962.66/145,127.40
  6. Step 6: Final answer
    x = 112,411.49

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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.