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Finding the Fourth Proportional to 180,868.81, 249,611.76 and 100,304.05

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Solution

The fourth proportional to 180,868.81, 249,611.76 and 100,304.05 is: 138,426.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,868.81 : 249,611.76 = 100,304.05 : x
  2. Step 2: Convert to fraction form
    180,868.81/249,611.76 = 100,304.05/x
  3. Step 3: Cross multiply
    180,868.81x = 249,611.76 × 100,304.05
  4. Step 4: Simplify right side
    180,868.81x = 25,037,070,455.63
  5. Step 5: Solve for x
    x = 25,037,070,455.63/180,868.81
  6. Step 6: Final answer
    x = 138,426.69

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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.