Home / 78,145.08-117,232.02-25,557.48

Finding the Fourth Proportional to 78,145.08, 117,232.02 and 25,557.48

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Solution

The fourth proportional to 78,145.08, 117,232.02 and 25,557.48 is: 38,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,145.08 : 117,232.02 = 25,557.48 : x
  2. Step 2: Convert to fraction form
    78,145.08/117,232.02 = 25,557.48/x
  3. Step 3: Cross multiply
    78,145.08x = 117,232.02 × 25,557.48
  4. Step 4: Simplify right side
    78,145.08x = 2,996,155,006.51
  5. Step 5: Solve for x
    x = 2,996,155,006.51/78,145.08
  6. Step 6: Final answer
    x = 38,340.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.