Home / 111,016.90-153,220.58-72,887.07

Finding the Fourth Proportional to 111,016.90, 153,220.58 and 72,887.07

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Solution

The fourth proportional to 111,016.90, 153,220.58 and 72,887.07 is: 100,595.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,016.90 : 153,220.58 = 72,887.07 : x
  2. Step 2: Convert to fraction form
    111,016.90/153,220.58 = 72,887.07/x
  3. Step 3: Cross multiply
    111,016.90x = 153,220.58 × 72,887.07
  4. Step 4: Simplify right side
    111,016.90x = 11,167,799,139.90
  5. Step 5: Solve for x
    x = 11,167,799,139.90/111,016.90
  6. Step 6: Final answer
    x = 100,595.49

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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.