Home / 131,815.56-181,905.64-71,386.30

Finding the Fourth Proportional to 131,815.56, 181,905.64 and 71,386.30

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Solution

The fourth proportional to 131,815.56, 181,905.64 and 71,386.30 is: 98,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,815.56 : 181,905.64 = 71,386.30 : x
  2. Step 2: Convert to fraction form
    131,815.56/181,905.64 = 71,386.30/x
  3. Step 3: Cross multiply
    131,815.56x = 181,905.64 × 71,386.30
  4. Step 4: Simplify right side
    131,815.56x = 12,985,570,588.73
  5. Step 5: Solve for x
    x = 12,985,570,588.73/131,815.56
  6. Step 6: Final answer
    x = 98,513.18

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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.