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Finding the Fourth Proportional to 151,458.21, 209,011.23 and 83,475.21

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Solution

The fourth proportional to 151,458.21, 209,011.23 and 83,475.21 is: 115,195.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,458.21 : 209,011.23 = 83,475.21 : x
  2. Step 2: Convert to fraction form
    151,458.21/209,011.23 = 83,475.21/x
  3. Step 3: Cross multiply
    151,458.21x = 209,011.23 × 83,475.21
  4. Step 4: Simplify right side
    151,458.21x = 17,447,256,316.61
  5. Step 5: Solve for x
    x = 17,447,256,316.61/151,458.21
  6. Step 6: Final answer
    x = 115,195.18

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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.