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Finding the Fourth Proportional to 140,730.60, 210,916.70 and 57,530.60

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Solution

The fourth proportional to 140,730.60, 210,916.70 and 57,530.60 is: 86,222.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,730.60 : 210,916.70 = 57,530.60 : x
  2. Step 2: Convert to fraction form
    140,730.60/210,916.70 = 57,530.60/x
  3. Step 3: Cross multiply
    140,730.60x = 210,916.70 × 57,530.60
  4. Step 4: Simplify right side
    140,730.60x = 12,134,164,301.02
  5. Step 5: Solve for x
    x = 12,134,164,301.02/140,730.60
  6. Step 6: Final answer
    x = 86,222.64

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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.