Home / 142,460.40-213,740.10-53,739.48

Finding the Fourth Proportional to 142,460.40, 213,740.10 and 53,739.48

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Solution

The fourth proportional to 142,460.40, 213,740.10 and 53,739.48 is: 80,627.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,460.40 : 213,740.10 = 53,739.48 : x
  2. Step 2: Convert to fraction form
    142,460.40/213,740.10 = 53,739.48/x
  3. Step 3: Cross multiply
    142,460.40x = 213,740.10 × 53,739.48
  4. Step 4: Simplify right side
    142,460.40x = 11,486,281,829.15
  5. Step 5: Solve for x
    x = 11,486,281,829.15/142,460.40
  6. Step 6: Final answer
    x = 80,627.89

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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.