Home / 105,099.36-145,040.18-57,355.77

Finding the Fourth Proportional to 105,099.36, 145,040.18 and 57,355.77

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Solution

The fourth proportional to 105,099.36, 145,040.18 and 57,355.77 is: 79,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,099.36 : 145,040.18 = 57,355.77 : x
  2. Step 2: Convert to fraction form
    105,099.36/145,040.18 = 57,355.77/x
  3. Step 3: Cross multiply
    105,099.36x = 145,040.18 × 57,355.77
  4. Step 4: Simplify right side
    105,099.36x = 8,318,890,918.06
  5. Step 5: Solve for x
    x = 8,318,890,918.06/105,099.36
  6. Step 6: Final answer
    x = 79,152.63

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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.