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Finding the Fourth Proportional to 128,045.49, 176,629.05 and 74,323.59

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Solution

The fourth proportional to 128,045.49, 176,629.05 and 74,323.59 is: 102,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045.49 : 176,629.05 = 74,323.59 : x
  2. Step 2: Convert to fraction form
    128,045.49/176,629.05 = 74,323.59/x
  3. Step 3: Cross multiply
    128,045.49x = 176,629.05 × 74,323.59
  4. Step 4: Simplify right side
    128,045.49x = 13,127,705,094.29
  5. Step 5: Solve for x
    x = 13,127,705,094.29/128,045.49
  6. Step 6: Final answer
    x = 102,523.76

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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.