Home / 140,080.12-193,307.32-76,420.16

Finding the Fourth Proportional to 140,080.12, 193,307.32 and 76,420.16

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Solution

The fourth proportional to 140,080.12, 193,307.32 and 76,420.16 is: 105,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,080.12 : 193,307.32 = 76,420.16 : x
  2. Step 2: Convert to fraction form
    140,080.12/193,307.32 = 76,420.16/x
  3. Step 3: Cross multiply
    140,080.12x = 193,307.32 × 76,420.16
  4. Step 4: Simplify right side
    140,080.12x = 14,772,576,323.57
  5. Step 5: Solve for x
    x = 14,772,576,323.57/140,080.12
  6. Step 6: Final answer
    x = 105,458.05

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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.