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Finding the Fourth Proportional to 114,277.76, 157,719.84 and 63,980

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Solution

The fourth proportional to 114,277.76, 157,719.84 and 63,980 is: 88,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,277.76 : 157,719.84 = 63,980 : x
  2. Step 2: Convert to fraction form
    114,277.76/157,719.84 = 63,980/x
  3. Step 3: Cross multiply
    114,277.76x = 157,719.84 × 63,980
  4. Step 4: Simplify right side
    114,277.76x = 10,090,915,363.20
  5. Step 5: Solve for x
    x = 10,090,915,363.20/114,277.76
  6. Step 6: Final answer
    x = 88,301.66

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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.