Home / 105,180.40-145,148.22-57,433.72

Finding the Fourth Proportional to 105,180.40, 145,148.22 and 57,433.72

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Solution

The fourth proportional to 105,180.40, 145,148.22 and 57,433.72 is: 79,258.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,180.40 : 145,148.22 = 57,433.72 : x
  2. Step 2: Convert to fraction form
    105,180.40/145,148.22 = 57,433.72/x
  3. Step 3: Cross multiply
    105,180.40x = 145,148.22 × 57,433.72
  4. Step 4: Simplify right side
    105,180.40x = 8,336,402,225.98
  5. Step 5: Solve for x
    x = 8,336,402,225.98/105,180.40
  6. Step 6: Final answer
    x = 79,258.13

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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.