Home / 191,200.20-286,800.30-121,158.60

Finding the Fourth Proportional to 191,200.20, 286,800.30 and 121,158.60

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Solution

The fourth proportional to 191,200.20, 286,800.30 and 121,158.60 is: 181,737.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,200.20 : 286,800.30 = 121,158.60 : x
  2. Step 2: Convert to fraction form
    191,200.20/286,800.30 = 121,158.60/x
  3. Step 3: Cross multiply
    191,200.20x = 286,800.30 × 121,158.60
  4. Step 4: Simplify right side
    191,200.20x = 34,748,322,827.58
  5. Step 5: Solve for x
    x = 34,748,322,827.58/191,200.20
  6. Step 6: Final answer
    x = 181,737.90

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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.