Home / 142,641.26-196,783.05-86,021.18

Finding the Fourth Proportional to 142,641.26, 196,783.05 and 86,021.18

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Solution

The fourth proportional to 142,641.26, 196,783.05 and 86,021.18 is: 118,671.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,641.26 : 196,783.05 = 86,021.18 : x
  2. Step 2: Convert to fraction form
    142,641.26/196,783.05 = 86,021.18/x
  3. Step 3: Cross multiply
    142,641.26x = 196,783.05 × 86,021.18
  4. Step 4: Simplify right side
    142,641.26x = 16,927,510,165.00
  5. Step 5: Solve for x
    x = 16,927,510,165.00/142,641.26
  6. Step 6: Final answer
    x = 118,671.91

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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.