Home / 105,303.12-145,313.94-57,558.12

Finding the Fourth Proportional to 105,303.12, 145,313.94 and 57,558.12

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Solution

The fourth proportional to 105,303.12, 145,313.94 and 57,558.12 is: 79,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,303.12 : 145,313.94 = 57,558.12 : x
  2. Step 2: Convert to fraction form
    105,303.12/145,313.94 = 57,558.12/x
  3. Step 3: Cross multiply
    105,303.12x = 145,313.94 × 57,558.12
  4. Step 4: Simplify right side
    105,303.12x = 8,363,997,196.19
  5. Step 5: Solve for x
    x = 8,363,997,196.19/105,303.12
  6. Step 6: Final answer
    x = 79,427.82

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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.