Home / 131,477.50-181,438.95-74,921.68

Finding the Fourth Proportional to 131,477.50, 181,438.95 and 74,921.68

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Solution

The fourth proportional to 131,477.50, 181,438.95 and 74,921.68 is: 103,391.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,477.50 : 181,438.95 = 74,921.68 : x
  2. Step 2: Convert to fraction form
    131,477.50/181,438.95 = 74,921.68/x
  3. Step 3: Cross multiply
    131,477.50x = 181,438.95 × 74,921.68
  4. Step 4: Simplify right side
    131,477.50x = 13,593,710,951.44
  5. Step 5: Solve for x
    x = 13,593,710,951.44/131,477.50
  6. Step 6: Final answer
    x = 103,391.92

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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.