Home / 105,099.10-145,039.84-57,355.52

Finding the Fourth Proportional to 105,099.10, 145,039.84 and 57,355.52

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Solution

The fourth proportional to 105,099.10, 145,039.84 and 57,355.52 is: 79,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,099.10 : 145,039.84 = 57,355.52 : x
  2. Step 2: Convert to fraction form
    105,099.10/145,039.84 = 57,355.52/x
  3. Step 3: Cross multiply
    105,099.10x = 145,039.84 × 57,355.52
  4. Step 4: Simplify right side
    105,099.10x = 8,318,835,443.92
  5. Step 5: Solve for x
    x = 8,318,835,443.92/105,099.10
  6. Step 6: Final answer
    x = 79,152.30

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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.