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Finding the Fourth Proportional to 180,642.72, 249,286.32 and 101,154.72

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Solution

The fourth proportional to 180,642.72, 249,286.32 and 101,154.72 is: 139,593.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,642.72 : 249,286.32 = 101,154.72 : x
  2. Step 2: Convert to fraction form
    180,642.72/249,286.32 = 101,154.72/x
  3. Step 3: Cross multiply
    180,642.72x = 249,286.32 × 101,154.72
  4. Step 4: Simplify right side
    180,642.72x = 25,216,487,899.43
  5. Step 5: Solve for x
    x = 25,216,487,899.43/180,642.72
  6. Step 6: Final answer
    x = 139,593.16

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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.