Home / 123,676.24-170,677.40-72,688.24

Finding the Fourth Proportional to 123,676.24, 170,677.40 and 72,688.24

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Solution

The fourth proportional to 123,676.24, 170,677.40 and 72,688.24 is: 100,312.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,676.24 : 170,677.40 = 72,688.24 : x
  2. Step 2: Convert to fraction form
    123,676.24/170,677.40 = 72,688.24/x
  3. Step 3: Cross multiply
    123,676.24x = 170,677.40 × 72,688.24
  4. Step 4: Simplify right side
    123,676.24x = 12,406,239,813.78
  5. Step 5: Solve for x
    x = 12,406,239,813.78/123,676.24
  6. Step 6: Final answer
    x = 100,312.23

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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.