Home / 139,068.78-208,632.21-45,567.18

Finding the Fourth Proportional to 139,068.78, 208,632.21 and 45,567.18

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Solution

The fourth proportional to 139,068.78, 208,632.21 and 45,567.18 is: 68,360.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,068.78 : 208,632.21 = 45,567.18 : x
  2. Step 2: Convert to fraction form
    139,068.78/208,632.21 = 45,567.18/x
  3. Step 3: Cross multiply
    139,068.78x = 208,632.21 × 45,567.18
  4. Step 4: Simplify right side
    139,068.78x = 9,506,781,466.87
  5. Step 5: Solve for x
    x = 9,506,781,466.87/139,068.78
  6. Step 6: Final answer
    x = 68,360.29

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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.