Home / 112,135.05-168,191.64-45,579.15

Finding the Fourth Proportional to 112,135.05, 168,191.64 and 45,579.15

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Solution

The fourth proportional to 112,135.05, 168,191.64 and 45,579.15 is: 68,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,135.05 : 168,191.64 = 45,579.15 : x
  2. Step 2: Convert to fraction form
    112,135.05/168,191.64 = 45,579.15/x
  3. Step 3: Cross multiply
    112,135.05x = 168,191.64 × 45,579.15
  4. Step 4: Simplify right side
    112,135.05x = 7,666,031,988.31
  5. Step 5: Solve for x
    x = 7,666,031,988.31/112,135.05
  6. Step 6: Final answer
    x = 68,364.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.