Home / 145,688.56-201,049.61-81,158.55

Finding the Fourth Proportional to 145,688.56, 201,049.61 and 81,158.55

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Solution

The fourth proportional to 145,688.56, 201,049.61 and 81,158.55 is: 111,998.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,688.56 : 201,049.61 = 81,158.55 : x
  2. Step 2: Convert to fraction form
    145,688.56/201,049.61 = 81,158.55/x
  3. Step 3: Cross multiply
    145,688.56x = 201,049.61 × 81,158.55
  4. Step 4: Simplify right side
    145,688.56x = 16,316,894,825.67
  5. Step 5: Solve for x
    x = 16,316,894,825.67/145,688.56
  6. Step 6: Final answer
    x = 111,998.46

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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.