Home / 180,728.66-249,407.03-100,157.51

Finding the Fourth Proportional to 180,728.66, 249,407.03 and 100,157.51

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Solution

The fourth proportional to 180,728.66, 249,407.03 and 100,157.51 is: 138,218.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,728.66 : 249,407.03 = 100,157.51 : x
  2. Step 2: Convert to fraction form
    180,728.66/249,407.03 = 100,157.51/x
  3. Step 3: Cross multiply
    180,728.66x = 249,407.03 × 100,157.51
  4. Step 4: Simplify right side
    180,728.66x = 24,979,987,975.21
  5. Step 5: Solve for x
    x = 24,979,987,975.21/180,728.66
  6. Step 6: Final answer
    x = 138,218.19

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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.