Home / 78,330.56-117,495.28-19,167.08

Finding the Fourth Proportional to 78,330.56, 117,495.28 and 19,167.08

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Solution

The fourth proportional to 78,330.56, 117,495.28 and 19,167.08 is: 28,750.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.56 : 117,495.28 = 19,167.08 : x
  2. Step 2: Convert to fraction form
    78,330.56/117,495.28 = 19,167.08/x
  3. Step 3: Cross multiply
    78,330.56x = 117,495.28 × 19,167.08
  4. Step 4: Simplify right side
    78,330.56x = 2,252,041,431.38
  5. Step 5: Solve for x
    x = 2,252,041,431.38/78,330.56
  6. Step 6: Final answer
    x = 28,750.48

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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.