Home / 142,742.32-197,005.08-86,161.84

Finding the Fourth Proportional to 142,742.32, 197,005.08 and 86,161.84

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Solution

The fourth proportional to 142,742.32, 197,005.08 and 86,161.84 is: 118,915.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,742.32 : 197,005.08 = 86,161.84 : x
  2. Step 2: Convert to fraction form
    142,742.32/197,005.08 = 86,161.84/x
  3. Step 3: Cross multiply
    142,742.32x = 197,005.08 × 86,161.84
  4. Step 4: Simplify right side
    142,742.32x = 16,974,320,182.15
  5. Step 5: Solve for x
    x = 16,974,320,182.15/142,742.32
  6. Step 6: Final answer
    x = 118,915.82

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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.