Home / 140,541.60-210,848.40-81,271.20

Finding the Fourth Proportional to 140,541.60, 210,848.40 and 81,271.20

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Solution

The fourth proportional to 140,541.60, 210,848.40 and 81,271.20 is: 121,927.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,541.60 : 210,848.40 = 81,271.20 : x
  2. Step 2: Convert to fraction form
    140,541.60/210,848.40 = 81,271.20/x
  3. Step 3: Cross multiply
    140,541.60x = 210,848.40 × 81,271.20
  4. Step 4: Simplify right side
    140,541.60x = 17,135,902,486.08
  5. Step 5: Solve for x
    x = 17,135,902,486.08/140,541.60
  6. Step 6: Final answer
    x = 121,927.62

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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.