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Finding the Fourth Proportional to 104,405.63, 144,079.86 and 56,658.98

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Solution

The fourth proportional to 104,405.63, 144,079.86 and 56,658.98 is: 78,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,405.63 : 144,079.86 = 56,658.98 : x
  2. Step 2: Convert to fraction form
    104,405.63/144,079.86 = 56,658.98/x
  3. Step 3: Cross multiply
    104,405.63x = 144,079.86 × 56,658.98
  4. Step 4: Simplify right side
    104,405.63x = 8,163,418,478.81
  5. Step 5: Solve for x
    x = 8,163,418,478.81/104,405.63
  6. Step 6: Final answer
    x = 78,189.45

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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.