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Finding the Fourth Proportional to 114,989.68, 158,685.68 and 64,688.68

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Solution

The fourth proportional to 114,989.68, 158,685.68 and 64,688.68 is: 89,270.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,989.68 : 158,685.68 = 64,688.68 : x
  2. Step 2: Convert to fraction form
    114,989.68/158,685.68 = 64,688.68/x
  3. Step 3: Cross multiply
    114,989.68x = 158,685.68 × 64,688.68
  4. Step 4: Simplify right side
    114,989.68x = 10,265,167,174.10
  5. Step 5: Solve for x
    x = 10,265,167,174.10/114,989.68
  6. Step 6: Final answer
    x = 89,270.33

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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.