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Finding the Fourth Proportional to 114,687, 158,268.60 and 64,386

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Solution

The fourth proportional to 114,687, 158,268.60 and 64,386 is: 88,852.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,687 : 158,268.60 = 64,386 : x
  2. Step 2: Convert to fraction form
    114,687/158,268.60 = 64,386/x
  3. Step 3: Cross multiply
    114,687x = 158,268.60 × 64,386
  4. Step 4: Simplify right side
    114,687x = 10,190,282,079.60
  5. Step 5: Solve for x
    x = 10,190,282,079.60/114,687
  6. Step 6: Final answer
    x = 88,852.98

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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.