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Finding the Fourth Proportional to 235,531.94, 325,030.86 and 128,099.66

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Solution

The fourth proportional to 235,531.94, 325,030.86 and 128,099.66 is: 176,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,531.94 : 325,030.86 = 128,099.66 : x
  2. Step 2: Convert to fraction form
    235,531.94/325,030.86 = 128,099.66/x
  3. Step 3: Cross multiply
    235,531.94x = 325,030.86 × 128,099.66
  4. Step 4: Simplify right side
    235,531.94x = 41,636,342,655.51
  5. Step 5: Solve for x
    x = 41,636,342,655.51/235,531.94
  6. Step 6: Final answer
    x = 176,775.78

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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.