Home / 79,156.16-118,580.52-70,743.68

Finding the Fourth Proportional to 79,156.16, 118,580.52 and 70,743.68

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Solution

The fourth proportional to 79,156.16, 118,580.52 and 70,743.68 is: 105,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,156.16 : 118,580.52 = 70,743.68 : x
  2. Step 2: Convert to fraction form
    79,156.16/118,580.52 = 70,743.68/x
  3. Step 3: Cross multiply
    79,156.16x = 118,580.52 × 70,743.68
  4. Step 4: Simplify right side
    79,156.16x = 8,388,822,361.11
  5. Step 5: Solve for x
    x = 8,388,822,361.11/79,156.16
  6. Step 6: Final answer
    x = 105,978.14

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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.