Home / 103,205.61-142,421.90-57,883.68

Finding the Fourth Proportional to 103,205.61, 142,421.90 and 57,883.68

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Solution

The fourth proportional to 103,205.61, 142,421.90 and 57,883.68 is: 79,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,205.61 : 142,421.90 = 57,883.68 : x
  2. Step 2: Convert to fraction form
    103,205.61/142,421.90 = 57,883.68/x
  3. Step 3: Cross multiply
    103,205.61x = 142,421.90 × 57,883.68
  4. Step 4: Simplify right side
    103,205.61x = 8,243,903,395.17
  5. Step 5: Solve for x
    x = 8,243,903,395.17/103,205.61
  6. Step 6: Final answer
    x = 79,878.44

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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.