Home / 111,140.04-153,374.28-65,820.60

Finding the Fourth Proportional to 111,140.04, 153,374.28 and 65,820.60

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Solution

The fourth proportional to 111,140.04, 153,374.28 and 65,820.60 is: 90,833.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,140.04 : 153,374.28 = 65,820.60 : x
  2. Step 2: Convert to fraction form
    111,140.04/153,374.28 = 65,820.60/x
  3. Step 3: Cross multiply
    111,140.04x = 153,374.28 × 65,820.60
  4. Step 4: Simplify right side
    111,140.04x = 10,095,187,134.17
  5. Step 5: Solve for x
    x = 10,095,187,134.17/111,140.04
  6. Step 6: Final answer
    x = 90,833.03

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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.