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Finding the Fourth Proportional to 128,802.60, 193,244.40 and 62,244.90

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Solution

The fourth proportional to 128,802.60, 193,244.40 and 62,244.90 is: 93,386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,802.60 : 193,244.40 = 62,244.90 : x
  2. Step 2: Convert to fraction form
    128,802.60/193,244.40 = 62,244.90/x
  3. Step 3: Cross multiply
    128,802.60x = 193,244.40 × 62,244.90
  4. Step 4: Simplify right side
    128,802.60x = 12,028,478,353.56
  5. Step 5: Solve for x
    x = 12,028,478,353.56/128,802.60
  6. Step 6: Final answer
    x = 93,386.92

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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.