Home / 142,201.13-196,237.55-78,543.02

Finding the Fourth Proportional to 142,201.13, 196,237.55 and 78,543.02

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Solution

The fourth proportional to 142,201.13, 196,237.55 and 78,543.02 is: 108,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,201.13 : 196,237.55 = 78,543.02 : x
  2. Step 2: Convert to fraction form
    142,201.13/196,237.55 = 78,543.02/x
  3. Step 3: Cross multiply
    142,201.13x = 196,237.55 × 78,543.02
  4. Step 4: Simplify right side
    142,201.13x = 15,413,090,501.35
  5. Step 5: Solve for x
    x = 15,413,090,501.35/142,201.13
  6. Step 6: Final answer
    x = 108,389.37

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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.