Home / 235,916.78-325,569.04-128,488.91

Finding the Fourth Proportional to 235,916.78, 325,569.04 and 128,488.91

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Solution

The fourth proportional to 235,916.78, 325,569.04 and 128,488.91 is: 177,316.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,916.78 : 325,569.04 = 128,488.91 : x
  2. Step 2: Convert to fraction form
    235,916.78/325,569.04 = 128,488.91/x
  3. Step 3: Cross multiply
    235,916.78x = 325,569.04 × 128,488.91
  4. Step 4: Simplify right side
    235,916.78x = 41,832,009,130.28
  5. Step 5: Solve for x
    x = 41,832,009,130.28/235,916.78
  6. Step 6: Final answer
    x = 177,316.81

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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.