Home / 143,056.16-197,280.36-85,686.32

Finding the Fourth Proportional to 143,056.16, 197,280.36 and 85,686.32

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Solution

The fourth proportional to 143,056.16, 197,280.36 and 85,686.32 is: 118,164.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,056.16 : 197,280.36 = 85,686.32 : x
  2. Step 2: Convert to fraction form
    143,056.16/197,280.36 = 85,686.32/x
  3. Step 3: Cross multiply
    143,056.16x = 197,280.36 × 85,686.32
  4. Step 4: Simplify right side
    143,056.16x = 16,904,228,056.68
  5. Step 5: Solve for x
    x = 16,904,228,056.68/143,056.16
  6. Step 6: Final answer
    x = 118,164.98

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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.