Home / 142,990.44-197,332.08-86,390.88

Finding the Fourth Proportional to 142,990.44, 197,332.08 and 86,390.88

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Solution

The fourth proportional to 142,990.44, 197,332.08 and 86,390.88 is: 119,222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,990.44 : 197,332.08 = 86,390.88 : x
  2. Step 2: Convert to fraction form
    142,990.44/197,332.08 = 86,390.88/x
  3. Step 3: Cross multiply
    142,990.44x = 197,332.08 × 86,390.88
  4. Step 4: Simplify right side
    142,990.44x = 17,047,692,043.43
  5. Step 5: Solve for x
    x = 17,047,692,043.43/142,990.44
  6. Step 6: Final answer
    x = 119,222.60

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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.