Home / 112,987.72-155,996.09-70,012.81

Finding the Fourth Proportional to 112,987.72, 155,996.09 and 70,012.81

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Solution

The fourth proportional to 112,987.72, 155,996.09 and 70,012.81 is: 96,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,987.72 : 155,996.09 = 70,012.81 : x
  2. Step 2: Convert to fraction form
    112,987.72/155,996.09 = 70,012.81/x
  3. Step 3: Cross multiply
    112,987.72x = 155,996.09 × 70,012.81
  4. Step 4: Simplify right side
    112,987.72x = 10,921,724,259.85
  5. Step 5: Solve for x
    x = 10,921,724,259.85/112,987.72
  6. Step 6: Final answer
    x = 96,662.94

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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.