Home / 191,946.70-287,504.52-139,240

Finding the Fourth Proportional to 191,946.70, 287,504.52 and 139,240

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Solution

The fourth proportional to 191,946.70, 287,504.52 and 139,240 is: 208,558.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,946.70 : 287,504.52 = 139,240 : x
  2. Step 2: Convert to fraction form
    191,946.70/287,504.52 = 139,240/x
  3. Step 3: Cross multiply
    191,946.70x = 287,504.52 × 139,240
  4. Step 4: Simplify right side
    191,946.70x = 40,032,129,364.80
  5. Step 5: Solve for x
    x = 40,032,129,364.80/191,946.70
  6. Step 6: Final answer
    x = 208,558.57

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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.