Home / 102,988.95-142,127.37-57,676.50

Finding the Fourth Proportional to 102,988.95, 142,127.37 and 57,676.50

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Solution

The fourth proportional to 102,988.95, 142,127.37 and 57,676.50 is: 79,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,988.95 : 142,127.37 = 57,676.50 : x
  2. Step 2: Convert to fraction form
    102,988.95/142,127.37 = 57,676.50/x
  3. Step 3: Cross multiply
    102,988.95x = 142,127.37 × 57,676.50
  4. Step 4: Simplify right side
    102,988.95x = 8,197,409,255.81
  5. Step 5: Solve for x
    x = 8,197,409,255.81/102,988.95
  6. Step 6: Final answer
    x = 79,595.04

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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.