Home / 111,020.36-153,225.38-72,890.51

Finding the Fourth Proportional to 111,020.36, 153,225.38 and 72,890.51

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Solution

The fourth proportional to 111,020.36, 153,225.38 and 72,890.51 is: 100,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,020.36 : 153,225.38 = 72,890.51 : x
  2. Step 2: Convert to fraction form
    111,020.36/153,225.38 = 72,890.51/x
  3. Step 3: Cross multiply
    111,020.36x = 153,225.38 × 72,890.51
  4. Step 4: Simplify right side
    111,020.36x = 11,168,674,962.56
  5. Step 5: Solve for x
    x = 11,168,674,962.56/111,020.36
  6. Step 6: Final answer
    x = 100,600.25

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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.