Home / 139,881.08-193,033.46-76,219.40

Finding the Fourth Proportional to 139,881.08, 193,033.46 and 76,219.40

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Solution

The fourth proportional to 139,881.08, 193,033.46 and 76,219.40 is: 105,181.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,881.08 : 193,033.46 = 76,219.40 : x
  2. Step 2: Convert to fraction form
    139,881.08/193,033.46 = 76,219.40/x
  3. Step 3: Cross multiply
    139,881.08x = 193,033.46 × 76,219.40
  4. Step 4: Simplify right side
    139,881.08x = 14,712,894,501.12
  5. Step 5: Solve for x
    x = 14,712,894,501.12/139,881.08
  6. Step 6: Final answer
    x = 105,181.45

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1.5x scale

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.