Home / 145,326.41-200,569.23-81,664.21

Finding the Fourth Proportional to 145,326.41, 200,569.23 and 81,664.21

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Solution

The fourth proportional to 145,326.41, 200,569.23 and 81,664.21 is: 112,707.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,326.41 : 200,569.23 = 81,664.21 : x
  2. Step 2: Convert to fraction form
    145,326.41/200,569.23 = 81,664.21/x
  3. Step 3: Cross multiply
    145,326.41x = 200,569.23 × 81,664.21
  4. Step 4: Simplify right side
    145,326.41x = 16,379,327,718.26
  5. Step 5: Solve for x
    x = 16,379,327,718.26/145,326.41
  6. Step 6: Final answer
    x = 112,707.17

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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.