Home / 180,968.19-249,724.35-100,395.51

Finding the Fourth Proportional to 180,968.19, 249,724.35 and 100,395.51

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Solution

The fourth proportional to 180,968.19, 249,724.35 and 100,395.51 is: 138,539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,968.19 : 249,724.35 = 100,395.51 : x
  2. Step 2: Convert to fraction form
    180,968.19/249,724.35 = 100,395.51/x
  3. Step 3: Cross multiply
    180,968.19x = 249,724.35 × 100,395.51
  4. Step 4: Simplify right side
    180,968.19x = 25,071,203,477.67
  5. Step 5: Solve for x
    x = 25,071,203,477.67/180,968.19
  6. Step 6: Final answer
    x = 138,539.28

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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.