Home / 180,705.21-249,381.11-100,132.53

Finding the Fourth Proportional to 180,705.21, 249,381.11 and 100,132.53

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Solution

The fourth proportional to 180,705.21, 249,381.11 and 100,132.53 is: 138,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,705.21 : 249,381.11 = 100,132.53 : x
  2. Step 2: Convert to fraction form
    180,705.21/249,381.11 = 100,132.53/x
  3. Step 3: Cross multiply
    180,705.21x = 249,381.11 × 100,132.53
  4. Step 4: Simplify right side
    180,705.21x = 24,971,161,478.51
  5. Step 5: Solve for x
    x = 24,971,161,478.51/180,705.21
  6. Step 6: Final answer
    x = 138,187.28

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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.