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Finding the Fourth Proportional to 191,407.80, 286,900.28 and 79,026.06

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Solution

The fourth proportional to 191,407.80, 286,900.28 and 79,026.06 is: 118,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,407.80 : 286,900.28 = 79,026.06 : x
  2. Step 2: Convert to fraction form
    191,407.80/286,900.28 = 79,026.06/x
  3. Step 3: Cross multiply
    191,407.80x = 286,900.28 × 79,026.06
  4. Step 4: Simplify right side
    191,407.80x = 22,672,598,741.30
  5. Step 5: Solve for x
    x = 22,672,598,741.30/191,407.80
  6. Step 6: Final answer
    x = 118,451.80

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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.