Home / 123,500.45-170,428.41-69,784.32

Finding the Fourth Proportional to 123,500.45, 170,428.41 and 69,784.32

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Solution

The fourth proportional to 123,500.45, 170,428.41 and 69,784.32 is: 96,301.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,500.45 : 170,428.41 = 69,784.32 : x
  2. Step 2: Convert to fraction form
    123,500.45/170,428.41 = 69,784.32/x
  3. Step 3: Cross multiply
    123,500.45x = 170,428.41 × 69,784.32
  4. Step 4: Simplify right side
    123,500.45x = 11,893,230,700.53
  5. Step 5: Solve for x
    x = 11,893,230,700.53/123,500.45
  6. Step 6: Final answer
    x = 96,301.11

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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.