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Finding the Fourth Proportional to 105,063.61, 144,984.92 and 57,316.95

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Solution

The fourth proportional to 105,063.61, 144,984.92 and 57,316.95 is: 79,095.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,063.61 : 144,984.92 = 57,316.95 : x
  2. Step 2: Convert to fraction form
    105,063.61/144,984.92 = 57,316.95/x
  3. Step 3: Cross multiply
    105,063.61x = 144,984.92 × 57,316.95
  4. Step 4: Simplify right side
    105,063.61x = 8,310,093,410.39
  5. Step 5: Solve for x
    x = 8,310,093,410.39/105,063.61
  6. Step 6: Final answer
    x = 79,095.83

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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.