Home / 142,090.60-213,057.40-89,387.32

Finding the Fourth Proportional to 142,090.60, 213,057.40 and 89,387.32

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Solution

The fourth proportional to 142,090.60, 213,057.40 and 89,387.32 is: 134,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,090.60 : 213,057.40 = 89,387.32 : x
  2. Step 2: Convert to fraction form
    142,090.60/213,057.40 = 89,387.32/x
  3. Step 3: Cross multiply
    142,090.60x = 213,057.40 × 89,387.32
  4. Step 4: Simplify right side
    142,090.60x = 19,044,629,992.17
  5. Step 5: Solve for x
    x = 19,044,629,992.17/142,090.60
  6. Step 6: Final answer
    x = 134,031.60

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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.