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Finding the Fourth Proportional to 114,587.79, 158,160.21 and 78,303.93

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Solution

The fourth proportional to 114,587.79, 158,160.21 and 78,303.93 is: 108,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,587.79 : 158,160.21 = 78,303.93 : x
  2. Step 2: Convert to fraction form
    114,587.79/158,160.21 = 78,303.93/x
  3. Step 3: Cross multiply
    114,587.79x = 158,160.21 × 78,303.93
  4. Step 4: Simplify right side
    114,587.79x = 12,384,566,012.63
  5. Step 5: Solve for x
    x = 12,384,566,012.63/114,587.79
  6. Step 6: Final answer
    x = 108,079.28

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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.