Home / 180,963.19-249,717.45-100,390.51

Finding the Fourth Proportional to 180,963.19, 249,717.45 and 100,390.51

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Solution

The fourth proportional to 180,963.19, 249,717.45 and 100,390.51 is: 138,532.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,963.19 : 249,717.45 = 100,390.51 : x
  2. Step 2: Convert to fraction form
    180,963.19/249,717.45 = 100,390.51/x
  3. Step 3: Cross multiply
    180,963.19x = 249,717.45 × 100,390.51
  4. Step 4: Simplify right side
    180,963.19x = 25,069,262,161.40
  5. Step 5: Solve for x
    x = 25,069,262,161.40/180,963.19
  6. Step 6: Final answer
    x = 138,532.38

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1.5x scale

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.