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Finding the Fourth Proportional to 201,661.84, 278,293.16 and 125,152.40

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Solution

The fourth proportional to 201,661.84, 278,293.16 and 125,152.40 is: 172,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,661.84 : 278,293.16 = 125,152.40 : x
  2. Step 2: Convert to fraction form
    201,661.84/278,293.16 = 125,152.40/x
  3. Step 3: Cross multiply
    201,661.84x = 278,293.16 × 125,152.40
  4. Step 4: Simplify right side
    201,661.84x = 34,829,056,877.58
  5. Step 5: Solve for x
    x = 34,829,056,877.58/201,661.84
  6. Step 6: Final answer
    x = 172,710.20

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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.