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Finding the Fourth Proportional to 191,238.70, 286,274.85 and 112,117.90

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Solution

The fourth proportional to 191,238.70, 286,274.85 and 112,117.90 is: 167,834.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,238.70 : 286,274.85 = 112,117.90 : x
  2. Step 2: Convert to fraction form
    191,238.70/286,274.85 = 112,117.90/x
  3. Step 3: Cross multiply
    191,238.70x = 286,274.85 × 112,117.90
  4. Step 4: Simplify right side
    191,238.70x = 32,096,535,004.82
  5. Step 5: Solve for x
    x = 32,096,535,004.82/191,238.70
  6. Step 6: Final answer
    x = 167,834.94

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1.5x scale

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.