Home / 145,531.40-200,833.02-81,869.24

Finding the Fourth Proportional to 145,531.40, 200,833.02 and 81,869.24

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Solution

The fourth proportional to 145,531.40, 200,833.02 and 81,869.24 is: 112,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,531.40 : 200,833.02 = 81,869.24 : x
  2. Step 2: Convert to fraction form
    145,531.40/200,833.02 = 81,869.24/x
  3. Step 3: Cross multiply
    145,531.40x = 200,833.02 × 81,869.24
  4. Step 4: Simplify right side
    145,531.40x = 16,442,045,710.14
  5. Step 5: Solve for x
    x = 16,442,045,710.14/145,531.40
  6. Step 6: Final answer
    x = 112,979.37

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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.