Home / 111,890.07-154,403.75-64,110.20

Finding the Fourth Proportional to 111,890.07, 154,403.75 and 64,110.20

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Solution

The fourth proportional to 111,890.07, 154,403.75 and 64,110.20 is: 88,469.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,890.07 : 154,403.75 = 64,110.20 : x
  2. Step 2: Convert to fraction form
    111,890.07/154,403.75 = 64,110.20/x
  3. Step 3: Cross multiply
    111,890.07x = 154,403.75 × 64,110.20
  4. Step 4: Simplify right side
    111,890.07x = 9,898,854,681.51
  5. Step 5: Solve for x
    x = 9,898,854,681.51/111,890.07
  6. Step 6: Final answer
    x = 88,469.47

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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.