Home / 153,699.23-212,104.52-85,716.28

Finding the Fourth Proportional to 153,699.23, 212,104.52 and 85,716.28

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Solution

The fourth proportional to 153,699.23, 212,104.52 and 85,716.28 is: 118,288.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,699.23 : 212,104.52 = 85,716.28 : x
  2. Step 2: Convert to fraction form
    153,699.23/212,104.52 = 85,716.28/x
  3. Step 3: Cross multiply
    153,699.23x = 212,104.52 × 85,716.28
  4. Step 4: Simplify right side
    153,699.23x = 18,180,810,425.59
  5. Step 5: Solve for x
    x = 18,180,810,425.59/153,699.23
  6. Step 6: Final answer
    x = 118,288.23

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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.