Home / 105,102.83-145,046.63-59,178.29

Finding the Fourth Proportional to 105,102.83, 145,046.63 and 59,178.29

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Solution

The fourth proportional to 105,102.83, 145,046.63 and 59,178.29 is: 81,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,102.83 : 145,046.63 = 59,178.29 : x
  2. Step 2: Convert to fraction form
    105,102.83/145,046.63 = 59,178.29/x
  3. Step 3: Cross multiply
    105,102.83x = 145,046.63 × 59,178.29
  4. Step 4: Simplify right side
    105,102.83x = 8,583,611,318.99
  5. Step 5: Solve for x
    x = 8,583,611,318.99/105,102.83
  6. Step 6: Final answer
    x = 81,668.70

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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.