Home / 191,631.38-287,701.40-163,730.72

Finding the Fourth Proportional to 191,631.38, 287,701.40 and 163,730.72

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Solution

The fourth proportional to 191,631.38, 287,701.40 and 163,730.72 is: 245,813.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,631.38 : 287,701.40 = 163,730.72 : x
  2. Step 2: Convert to fraction form
    191,631.38/287,701.40 = 163,730.72/x
  3. Step 3: Cross multiply
    191,631.38x = 287,701.40 × 163,730.72
  4. Step 4: Simplify right side
    191,631.38x = 47,105,557,367.01
  5. Step 5: Solve for x
    x = 47,105,557,367.01/191,631.38
  6. Step 6: Final answer
    x = 245,813.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.