Home / 105,257.32-145,253.26-57,509.48

Finding the Fourth Proportional to 105,257.32, 145,253.26 and 57,509.48

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Solution

The fourth proportional to 105,257.32, 145,253.26 and 57,509.48 is: 79,362.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,257.32 : 145,253.26 = 57,509.48 : x
  2. Step 2: Convert to fraction form
    105,257.32/145,253.26 = 57,509.48/x
  3. Step 3: Cross multiply
    105,257.32x = 145,253.26 × 57,509.48
  4. Step 4: Simplify right side
    105,257.32x = 8,353,439,450.90
  5. Step 5: Solve for x
    x = 8,353,439,450.90/105,257.32
  6. Step 6: Final answer
    x = 79,362.08

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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.