Home / 78,251.36-117,378.27-19,088.15

Finding the Fourth Proportional to 78,251.36, 117,378.27 and 19,088.15

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Solution

The fourth proportional to 78,251.36, 117,378.27 and 19,088.15 is: 28,632.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,251.36 : 117,378.27 = 19,088.15 : x
  2. Step 2: Convert to fraction form
    78,251.36/117,378.27 = 19,088.15/x
  3. Step 3: Cross multiply
    78,251.36x = 117,378.27 × 19,088.15
  4. Step 4: Simplify right side
    78,251.36x = 2,240,533,437.61
  5. Step 5: Solve for x
    x = 2,240,533,437.61/78,251.36
  6. Step 6: Final answer
    x = 28,632.52

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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.