Home / 78,349.93-117,394.13-75,434.38

Finding the Fourth Proportional to 78,349.93, 117,394.13 and 75,434.38

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Solution

The fourth proportional to 78,349.93, 117,394.13 and 75,434.38 is: 113,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,349.93 : 117,394.13 = 75,434.38 : x
  2. Step 2: Convert to fraction form
    78,349.93/117,394.13 = 75,434.38/x
  3. Step 3: Cross multiply
    78,349.93x = 117,394.13 × 75,434.38
  4. Step 4: Simplify right side
    78,349.93x = 8,855,553,307.29
  5. Step 5: Solve for x
    x = 8,855,553,307.29/78,349.93
  6. Step 6: Final answer
    x = 113,025.67

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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.