Home / 105,112.08-145,055.08-57,366.50

Finding the Fourth Proportional to 105,112.08, 145,055.08 and 57,366.50

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Solution

The fourth proportional to 105,112.08, 145,055.08 and 57,366.50 is: 79,165.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,112.08 : 145,055.08 = 57,366.50 : x
  2. Step 2: Convert to fraction form
    105,112.08/145,055.08 = 57,366.50/x
  3. Step 3: Cross multiply
    105,112.08x = 145,055.08 × 57,366.50
  4. Step 4: Simplify right side
    105,112.08x = 8,321,302,246.82
  5. Step 5: Solve for x
    x = 8,321,302,246.82/105,112.08
  6. Step 6: Final answer
    x = 79,165.99

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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.