Home / 105,859.36-158,812-30,985.68

Finding the Fourth Proportional to 105,859.36, 158,812 and 30,985.68

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Solution

The fourth proportional to 105,859.36, 158,812 and 30,985.68 is: 46,485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,859.36 : 158,812 = 30,985.68 : x
  2. Step 2: Convert to fraction form
    105,859.36/158,812 = 30,985.68/x
  3. Step 3: Cross multiply
    105,859.36x = 158,812 × 30,985.68
  4. Step 4: Simplify right side
    105,859.36x = 4,920,897,812.16
  5. Step 5: Solve for x
    x = 4,920,897,812.16/105,859.36
  6. Step 6: Final answer
    x = 46,485.24

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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.