Home / 112,240.78-154,918.78-64,521.80

Finding the Fourth Proportional to 112,240.78, 154,918.78 and 64,521.80

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Solution

The fourth proportional to 112,240.78, 154,918.78 and 64,521.80 is: 89,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,240.78 : 154,918.78 = 64,521.80 : x
  2. Step 2: Convert to fraction form
    112,240.78/154,918.78 = 64,521.80/x
  3. Step 3: Cross multiply
    112,240.78x = 154,918.78 × 64,521.80
  4. Step 4: Simplify right side
    112,240.78x = 9,995,638,539.40
  5. Step 5: Solve for x
    x = 9,995,638,539.40/112,240.78
  6. Step 6: Final answer
    x = 89,055.32

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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.