Home / 103,112.12-142,306.53-57,802.34

Finding the Fourth Proportional to 103,112.12, 142,306.53 and 57,802.34

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Solution

The fourth proportional to 103,112.12, 142,306.53 and 57,802.34 is: 79,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,112.12 : 142,306.53 = 57,802.34 : x
  2. Step 2: Convert to fraction form
    103,112.12/142,306.53 = 57,802.34/x
  3. Step 3: Cross multiply
    103,112.12x = 142,306.53 × 57,802.34
  4. Step 4: Simplify right side
    103,112.12x = 8,225,650,431.28
  5. Step 5: Solve for x
    x = 8,225,650,431.28/103,112.12
  6. Step 6: Final answer
    x = 79,773.85

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1.5x scale

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.