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Finding the Fourth Proportional to 114,688, 158,269.98 and 64,387

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Solution

The fourth proportional to 114,688, 158,269.98 and 64,387 is: 88,854.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,688 : 158,269.98 = 64,387 : x
  2. Step 2: Convert to fraction form
    114,688/158,269.98 = 64,387/x
  3. Step 3: Cross multiply
    114,688x = 158,269.98 × 64,387
  4. Step 4: Simplify right side
    114,688x = 10,190,529,202.26
  5. Step 5: Solve for x
    x = 10,190,529,202.26/114,688
  6. Step 6: Final answer
    x = 88,854.36

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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.