Home / 158,315.32-218,465.13-86,696.20

Finding the Fourth Proportional to 158,315.32, 218,465.13 and 86,696.20

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Solution

The fourth proportional to 158,315.32, 218,465.13 and 86,696.20 is: 119,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,315.32 : 218,465.13 = 86,696.20 : x
  2. Step 2: Convert to fraction form
    158,315.32/218,465.13 = 86,696.20/x
  3. Step 3: Cross multiply
    158,315.32x = 218,465.13 × 86,696.20
  4. Step 4: Simplify right side
    158,315.32x = 18,940,096,603.51
  5. Step 5: Solve for x
    x = 18,940,096,603.51/158,315.32
  6. Step 6: Final answer
    x = 119,635.27

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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.