Home / 145,787.65-201,187.89-81,260.98

Finding the Fourth Proportional to 145,787.65, 201,187.89 and 81,260.98

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Solution

The fourth proportional to 145,787.65, 201,187.89 and 81,260.98 is: 112,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,787.65 : 201,187.89 = 81,260.98 : x
  2. Step 2: Convert to fraction form
    145,787.65/201,187.89 = 81,260.98/x
  3. Step 3: Cross multiply
    145,787.65x = 201,187.89 × 81,260.98
  4. Step 4: Simplify right side
    145,787.65x = 16,348,724,741.62
  5. Step 5: Solve for x
    x = 16,348,724,741.62/145,787.65
  6. Step 6: Final answer
    x = 112,140.67

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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.