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Finding the Fourth Proportional to 114,129.87, 157,503.86 and 63,141.72

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Solution

The fourth proportional to 114,129.87, 157,503.86 and 63,141.72 is: 87,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,129.87 : 157,503.86 = 63,141.72 : x
  2. Step 2: Convert to fraction form
    114,129.87/157,503.86 = 63,141.72/x
  3. Step 3: Cross multiply
    114,129.87x = 157,503.86 × 63,141.72
  4. Step 4: Simplify right side
    114,129.87x = 9,945,064,627.04
  5. Step 5: Solve for x
    x = 9,945,064,627.04/114,129.87
  6. Step 6: Final answer
    x = 87,138.14

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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.