Home / 128,150.71-176,862.89-106,602.35

Finding the Fourth Proportional to 128,150.71, 176,862.89 and 106,602.35

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Solution

The fourth proportional to 128,150.71, 176,862.89 and 106,602.35 is: 147,123.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,150.71 : 176,862.89 = 106,602.35 : x
  2. Step 2: Convert to fraction form
    128,150.71/176,862.89 = 106,602.35/x
  3. Step 3: Cross multiply
    128,150.71x = 176,862.89 × 106,602.35
  4. Step 4: Simplify right side
    128,150.71x = 18,853,999,083.98
  5. Step 5: Solve for x
    x = 18,853,999,083.98/128,150.71
  6. Step 6: Final answer
    x = 147,123.64

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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.