Home / 103,301,341.20-142,571,349.18-78,480,684.54

Finding the Fourth Proportional to 103,301,341.20, 142,571,349.18 and 78,480,684.54

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Solution

The fourth proportional to 103,301,341.20, 142,571,349.18 and 78,480,684.54 is: 108,315,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,301,341.20 : 142,571,349.18 = 78,480,684.54 : x
  2. Step 2: Convert to fraction form
    103,301,341.20/142,571,349.18 = 78,480,684.54/x
  3. Step 3: Cross multiply
    103,301,341.20x = 142,571,349.18 × 78,480,684.54
  4. Step 4: Simplify right side
    103,301,341.20x = 11,189,097,079,437,770
  5. Step 5: Solve for x
    x = 11,189,097,079,437,770/103,301,341.20
  6. Step 6: Final answer
    x = 108,315,119.14

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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.