Home / 180,945.93-249,706.89-100,378.74

Finding the Fourth Proportional to 180,945.93, 249,706.89 and 100,378.74

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Solution

The fourth proportional to 180,945.93, 249,706.89 and 100,378.74 is: 138,523.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,945.93 : 249,706.89 = 100,378.74 : x
  2. Step 2: Convert to fraction form
    180,945.93/249,706.89 = 100,378.74/x
  3. Step 3: Cross multiply
    180,945.93x = 249,706.89 × 100,378.74
  4. Step 4: Simplify right side
    180,945.93x = 25,065,262,987.52
  5. Step 5: Solve for x
    x = 25,065,262,987.52/180,945.93
  6. Step 6: Final answer
    x = 138,523.50

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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.