Home / 157,280.04-217,190.70-99,938.25

Finding the Fourth Proportional to 157,280.04, 217,190.70 and 99,938.25

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Solution

The fourth proportional to 157,280.04, 217,190.70 and 99,938.25 is: 138,006.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,280.04 : 217,190.70 = 99,938.25 : x
  2. Step 2: Convert to fraction form
    157,280.04/217,190.70 = 99,938.25/x
  3. Step 3: Cross multiply
    157,280.04x = 217,190.70 × 99,938.25
  4. Step 4: Simplify right side
    157,280.04x = 21,705,658,474.28
  5. Step 5: Solve for x
    x = 21,705,658,474.28/157,280.04
  6. Step 6: Final answer
    x = 138,006.44

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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.