Home / 191,332.20-286,998.30-121,290.60

Finding the Fourth Proportional to 191,332.20, 286,998.30 and 121,290.60

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Solution

The fourth proportional to 191,332.20, 286,998.30 and 121,290.60 is: 181,935.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,332.20 : 286,998.30 = 121,290.60 : x
  2. Step 2: Convert to fraction form
    191,332.20/286,998.30 = 121,290.60/x
  3. Step 3: Cross multiply
    191,332.20x = 286,998.30 × 121,290.60
  4. Step 4: Simplify right side
    191,332.20x = 34,810,196,005.98
  5. Step 5: Solve for x
    x = 34,810,196,005.98/191,332.20
  6. Step 6: Final answer
    x = 181,935.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.