Home / 128,951.19-193,426.11-70,160.58

Finding the Fourth Proportional to 128,951.19, 193,426.11 and 70,160.58

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Solution

The fourth proportional to 128,951.19, 193,426.11 and 70,160.58 is: 105,240.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,951.19 : 193,426.11 = 70,160.58 : x
  2. Step 2: Convert to fraction form
    128,951.19/193,426.11 = 70,160.58/x
  3. Step 3: Cross multiply
    128,951.19x = 193,426.11 × 70,160.58
  4. Step 4: Simplify right side
    128,951.19x = 13,570,888,064.74
  5. Step 5: Solve for x
    x = 13,570,888,064.74/128,951.19
  6. Step 6: Final answer
    x = 105,240.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.