Home / 128,151.71-176,864.27-106,603.35

Finding the Fourth Proportional to 128,151.71, 176,864.27 and 106,603.35

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Solution

The fourth proportional to 128,151.71, 176,864.27 and 106,603.35 is: 147,125.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.71 : 176,864.27 = 106,603.35 : x
  2. Step 2: Convert to fraction form
    128,151.71/176,864.27 = 106,603.35/x
  3. Step 3: Cross multiply
    128,151.71x = 176,864.27 × 106,603.35
  4. Step 4: Simplify right side
    128,151.71x = 18,854,323,677.30
  5. Step 5: Solve for x
    x = 18,854,323,677.30/128,151.71
  6. Step 6: Final answer
    x = 147,125.03

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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.