Home / 142,787.60-213,976.60-105,053.20

Finding the Fourth Proportional to 142,787.60, 213,976.60 and 105,053.20

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Solution

The fourth proportional to 142,787.60, 213,976.60 and 105,053.20 is: 157,429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.60 : 213,976.60 = 105,053.20 : x
  2. Step 2: Convert to fraction form
    142,787.60/213,976.60 = 105,053.20/x
  3. Step 3: Cross multiply
    142,787.60x = 213,976.60 × 105,053.20
  4. Step 4: Simplify right side
    142,787.60x = 22,478,926,555.12
  5. Step 5: Solve for x
    x = 22,478,926,555.12/142,787.60
  6. Step 6: Final answer
    x = 157,429.12

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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.