Home / 151,921.40-209,640.74-83,937.64

Finding the Fourth Proportional to 151,921.40, 209,640.74 and 83,937.64

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Solution

The fourth proportional to 151,921.40, 209,640.74 and 83,937.64 is: 115,827.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,921.40 : 209,640.74 = 83,937.64 : x
  2. Step 2: Convert to fraction form
    151,921.40/209,640.74 = 83,937.64/x
  3. Step 3: Cross multiply
    151,921.40x = 209,640.74 × 83,937.64
  4. Step 4: Simplify right side
    151,921.40x = 17,596,748,963.45
  5. Step 5: Solve for x
    x = 17,596,748,963.45/151,921.40
  6. Step 6: Final answer
    x = 115,827.98

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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.