Home / 208,219,467.51-287,331,804.63-120,108,223.17

Finding the Fourth Proportional to 208,219,467.51, 287,331,804.63 and 120,108,223.17

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Solution

The fourth proportional to 208,219,467.51, 287,331,804.63 and 120,108,223.17 is: 165,742,967.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,219,467.51 : 287,331,804.63 = 120,108,223.17 : x
  2. Step 2: Convert to fraction form
    208,219,467.51/287,331,804.63 = 120,108,223.17/x
  3. Step 3: Cross multiply
    208,219,467.51x = 287,331,804.63 × 120,108,223.17
  4. Step 4: Simplify right side
    208,219,467.51x = 34,510,912,514,338,880
  5. Step 5: Solve for x
    x = 34,510,912,514,338,880/208,219,467.51
  6. Step 6: Final answer
    x = 165,742,967.87

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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.