Home / 112,521.09-155,346.48-70,137.03

Finding the Fourth Proportional to 112,521.09, 155,346.48 and 70,137.03

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Solution

The fourth proportional to 112,521.09, 155,346.48 and 70,137.03 is: 96,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,521.09 : 155,346.48 = 70,137.03 : x
  2. Step 2: Convert to fraction form
    112,521.09/155,346.48 = 70,137.03/x
  3. Step 3: Cross multiply
    112,521.09x = 155,346.48 × 70,137.03
  4. Step 4: Simplify right side
    112,521.09x = 10,895,540,728.15
  5. Step 5: Solve for x
    x = 10,895,540,728.15/112,521.09
  6. Step 6: Final answer
    x = 96,831.10

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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.