Home / 130,916.25-180,665.64-74,328.84

Finding the Fourth Proportional to 130,916.25, 180,665.64 and 74,328.84

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Solution

The fourth proportional to 130,916.25, 180,665.64 and 74,328.84 is: 102,574.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,916.25 : 180,665.64 = 74,328.84 : x
  2. Step 2: Convert to fraction form
    130,916.25/180,665.64 = 74,328.84/x
  3. Step 3: Cross multiply
    130,916.25x = 180,665.64 × 74,328.84
  4. Step 4: Simplify right side
    130,916.25x = 13,428,667,449.06
  5. Step 5: Solve for x
    x = 13,428,667,449.06/130,916.25
  6. Step 6: Final answer
    x = 102,574.49

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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.