Home / 208,429.59-287,732.02-139,637.51

Finding the Fourth Proportional to 208,429.59, 287,732.02 and 139,637.51

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Solution

The fourth proportional to 208,429.59, 287,732.02 and 139,637.51 is: 192,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,429.59 : 287,732.02 = 139,637.51 : x
  2. Step 2: Convert to fraction form
    208,429.59/287,732.02 = 139,637.51/x
  3. Step 3: Cross multiply
    208,429.59x = 287,732.02 × 139,637.51
  4. Step 4: Simplify right side
    208,429.59x = 40,178,181,032.32
  5. Step 5: Solve for x
    x = 40,178,181,032.32/208,429.59
  6. Step 6: Final answer
    x = 192,766.20

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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.