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Finding the Fourth Proportional to 103,658.58, 143,056.11 and 58,340.93

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Solution

The fourth proportional to 103,658.58, 143,056.11 and 58,340.93 is: 80,514.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,658.58 : 143,056.11 = 58,340.93 : x
  2. Step 2: Convert to fraction form
    103,658.58/143,056.11 = 58,340.93/x
  3. Step 3: Cross multiply
    103,658.58x = 143,056.11 × 58,340.93
  4. Step 4: Simplify right side
    103,658.58x = 8,346,026,499.58
  5. Step 5: Solve for x
    x = 8,346,026,499.58/103,658.58
  6. Step 6: Final answer
    x = 80,514.57

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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.