Home / 142,703.20-196,900.08-86,113.60

Finding the Fourth Proportional to 142,703.20, 196,900.08 and 86,113.60

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Solution

The fourth proportional to 142,703.20, 196,900.08 and 86,113.60 is: 118,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,703.20 : 196,900.08 = 86,113.60 : x
  2. Step 2: Convert to fraction form
    142,703.20/196,900.08 = 86,113.60/x
  3. Step 3: Cross multiply
    142,703.20x = 196,900.08 × 86,113.60
  4. Step 4: Simplify right side
    142,703.20x = 16,955,774,729.09
  5. Step 5: Solve for x
    x = 16,955,774,729.09/142,703.20
  6. Step 6: Final answer
    x = 118,818.46

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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.