Home / 180,728.32-249,398.28-100,153.76

Finding the Fourth Proportional to 180,728.32, 249,398.28 and 100,153.76

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Solution

The fourth proportional to 180,728.32, 249,398.28 and 100,153.76 is: 138,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,728.32 : 249,398.28 = 100,153.76 : x
  2. Step 2: Convert to fraction form
    180,728.32/249,398.28 = 100,153.76/x
  3. Step 3: Cross multiply
    180,728.32x = 249,398.28 × 100,153.76
  4. Step 4: Simplify right side
    180,728.32x = 24,978,175,479.53
  5. Step 5: Solve for x
    x = 24,978,175,479.53/180,728.32
  6. Step 6: Final answer
    x = 138,208.42

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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.