Home / 149,307.86-206,038.68-81,325.10

Finding the Fourth Proportional to 149,307.86, 206,038.68 and 81,325.10

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Solution

The fourth proportional to 149,307.86, 206,038.68 and 81,325.10 is: 112,225.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,307.86 : 206,038.68 = 81,325.10 : x
  2. Step 2: Convert to fraction form
    149,307.86/206,038.68 = 81,325.10/x
  3. Step 3: Cross multiply
    149,307.86x = 206,038.68 × 81,325.10
  4. Step 4: Simplify right side
    149,307.86x = 16,756,116,254.87
  5. Step 5: Solve for x
    x = 16,756,116,254.87/149,307.86
  6. Step 6: Final answer
    x = 112,225.28

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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.