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Finding the Fourth Proportional to 249,955.20, 374,641.20 and 100,121.40

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Solution

The fourth proportional to 249,955.20, 374,641.20 and 100,121.40 is: 150,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,955.20 : 374,641.20 = 100,121.40 : x
  2. Step 2: Convert to fraction form
    249,955.20/374,641.20 = 100,121.40/x
  3. Step 3: Cross multiply
    249,955.20x = 374,641.20 × 100,121.40
  4. Step 4: Simplify right side
    249,955.20x = 37,509,601,441.68
  5. Step 5: Solve for x
    x = 37,509,601,441.68/249,955.20
  6. Step 6: Final answer
    x = 150,065.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.