Home / 102,948.31-142,056.71-57,628.81

Finding the Fourth Proportional to 102,948.31, 142,056.71 and 57,628.81

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Solution

The fourth proportional to 102,948.31, 142,056.71 and 57,628.81 is: 79,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,948.31 : 142,056.71 = 57,628.81 : x
  2. Step 2: Convert to fraction form
    102,948.31/142,056.71 = 57,628.81/x
  3. Step 3: Cross multiply
    102,948.31x = 142,056.71 × 57,628.81
  4. Step 4: Simplify right side
    102,948.31x = 8,186,558,506.53
  5. Step 5: Solve for x
    x = 8,186,558,506.53/102,948.31
  6. Step 6: Final answer
    x = 79,521.06

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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.