Home / 139,880.08-193,032.08-76,218.40

Finding the Fourth Proportional to 139,880.08, 193,032.08 and 76,218.40

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Solution

The fourth proportional to 139,880.08, 193,032.08 and 76,218.40 is: 105,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,880.08 : 193,032.08 = 76,218.40 : x
  2. Step 2: Convert to fraction form
    139,880.08/193,032.08 = 76,218.40/x
  3. Step 3: Cross multiply
    139,880.08x = 193,032.08 × 76,218.40
  4. Step 4: Simplify right side
    139,880.08x = 14,712,596,286.27
  5. Step 5: Solve for x
    x = 14,712,596,286.27/139,880.08
  6. Step 6: Final answer
    x = 105,180.07

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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.