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Finding the Fourth Proportional to 210,130.88, 289,944.34 and 118,237.36

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Solution

The fourth proportional to 210,130.88, 289,944.34 and 118,237.36 is: 163,147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,130.88 : 289,944.34 = 118,237.36 : x
  2. Step 2: Convert to fraction form
    210,130.88/289,944.34 = 118,237.36/x
  3. Step 3: Cross multiply
    210,130.88x = 289,944.34 × 118,237.36
  4. Step 4: Simplify right side
    210,130.88x = 34,282,253,308.54
  5. Step 5: Solve for x
    x = 34,282,253,308.54/210,130.88
  6. Step 6: Final answer
    x = 163,147.15

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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.