Home / 102,970.60-142,100.94-62,686.08

Finding the Fourth Proportional to 102,970.60, 142,100.94 and 62,686.08

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Solution

The fourth proportional to 102,970.60, 142,100.94 and 62,686.08 is: 86,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,970.60 : 142,100.94 = 62,686.08 : x
  2. Step 2: Convert to fraction form
    102,970.60/142,100.94 = 62,686.08/x
  3. Step 3: Cross multiply
    102,970.60x = 142,100.94 × 62,686.08
  4. Step 4: Simplify right side
    102,970.60x = 8,907,750,892.92
  5. Step 5: Solve for x
    x = 8,907,750,892.92/102,970.60
  6. Step 6: Final answer
    x = 86,507.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.