Home / 112,985.35-155,918.40-65,237.66

Finding the Fourth Proportional to 112,985.35, 155,918.40 and 65,237.66

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Solution

The fourth proportional to 112,985.35, 155,918.40 and 65,237.66 is: 90,027.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,985.35 : 155,918.40 = 65,237.66 : x
  2. Step 2: Convert to fraction form
    112,985.35/155,918.40 = 65,237.66/x
  3. Step 3: Cross multiply
    112,985.35x = 155,918.40 × 65,237.66
  4. Step 4: Simplify right side
    112,985.35x = 10,171,751,566.94
  5. Step 5: Solve for x
    x = 10,171,751,566.94/112,985.35
  6. Step 6: Final answer
    x = 90,027.17

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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.