Home / 208,631.10-287,889.75-128,062.02

Finding the Fourth Proportional to 208,631.10, 287,889.75 and 128,062.02

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Solution

The fourth proportional to 208,631.10, 287,889.75 and 128,062.02 is: 176,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,631.10 : 287,889.75 = 128,062.02 : x
  2. Step 2: Convert to fraction form
    208,631.10/287,889.75 = 128,062.02/x
  3. Step 3: Cross multiply
    208,631.10x = 287,889.75 × 128,062.02
  4. Step 4: Simplify right side
    208,631.10x = 36,867,742,922.30
  5. Step 5: Solve for x
    x = 36,867,742,922.30/208,631.10
  6. Step 6: Final answer
    x = 176,712.59

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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.