Home / 103,166.77-142,432.26-67,416.61

Finding the Fourth Proportional to 103,166.77, 142,432.26 and 67,416.61

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Solution

The fourth proportional to 103,166.77, 142,432.26 and 67,416.61 is: 93,075.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,166.77 : 142,432.26 = 67,416.61 : x
  2. Step 2: Convert to fraction form
    103,166.77/142,432.26 = 67,416.61/x
  3. Step 3: Cross multiply
    103,166.77x = 142,432.26 × 67,416.61
  4. Step 4: Simplify right side
    103,166.77x = 9,602,300,123.84
  5. Step 5: Solve for x
    x = 9,602,300,123.84/103,166.77
  6. Step 6: Final answer
    x = 93,075.51

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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.