Home / 131,141.37-181,040.45-85,888.70

Finding the Fourth Proportional to 131,141.37, 181,040.45 and 85,888.70

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Solution

The fourth proportional to 131,141.37, 181,040.45 and 85,888.70 is: 118,569.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,141.37 : 181,040.45 = 85,888.70 : x
  2. Step 2: Convert to fraction form
    131,141.37/181,040.45 = 85,888.70/x
  3. Step 3: Cross multiply
    131,141.37x = 181,040.45 × 85,888.70
  4. Step 4: Simplify right side
    131,141.37x = 15,549,328,725.29
  5. Step 5: Solve for x
    x = 15,549,328,725.29/131,141.37
  6. Step 6: Final answer
    x = 118,569.21

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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.