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Finding the Fourth Proportional to 180,960.81, 249,705.78 and 100,368.15

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Solution

The fourth proportional to 180,960.81, 249,705.78 and 100,368.15 is: 138,496.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,960.81 : 249,705.78 = 100,368.15 : x
  2. Step 2: Convert to fraction form
    180,960.81/249,705.78 = 100,368.15/x
  3. Step 3: Cross multiply
    180,960.81x = 249,705.78 × 100,368.15
  4. Step 4: Simplify right side
    180,960.81x = 25,062,507,182.91
  5. Step 5: Solve for x
    x = 25,062,507,182.91/180,960.81
  6. Step 6: Final answer
    x = 138,496.88

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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.