Home / 105,158.35-145,135.18-66,877.98

Finding the Fourth Proportional to 105,158.35, 145,135.18 and 66,877.98

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Solution

The fourth proportional to 105,158.35, 145,135.18 and 66,877.98 is: 92,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,158.35 : 145,135.18 = 66,877.98 : x
  2. Step 2: Convert to fraction form
    105,158.35/145,135.18 = 66,877.98/x
  3. Step 3: Cross multiply
    105,158.35x = 145,135.18 × 66,877.98
  4. Step 4: Simplify right side
    105,158.35x = 9,706,348,293.19
  5. Step 5: Solve for x
    x = 9,706,348,293.19/105,158.35
  6. Step 6: Final answer
    x = 92,302.21

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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.