Home / 139,887.19-193,038.27-79,457.64

Finding the Fourth Proportional to 139,887.19, 193,038.27 and 79,457.64

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Solution

The fourth proportional to 139,887.19, 193,038.27 and 79,457.64 is: 109,648.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,887.19 : 193,038.27 = 79,457.64 : x
  2. Step 2: Convert to fraction form
    139,887.19/193,038.27 = 79,457.64/x
  3. Step 3: Cross multiply
    139,887.19x = 193,038.27 × 79,457.64
  4. Step 4: Simplify right side
    139,887.19x = 15,338,365,363.88
  5. Step 5: Solve for x
    x = 15,338,365,363.88/139,887.19
  6. Step 6: Final answer
    x = 109,648.11

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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.