Home / 123,509.40-170,443.08-66,920.77

Finding the Fourth Proportional to 123,509.40, 170,443.08 and 66,920.77

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Solution

The fourth proportional to 123,509.40, 170,443.08 and 66,920.77 is: 92,350.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,509.40 : 170,443.08 = 66,920.77 : x
  2. Step 2: Convert to fraction form
    123,509.40/170,443.08 = 66,920.77/x
  3. Step 3: Cross multiply
    123,509.40x = 170,443.08 × 66,920.77
  4. Step 4: Simplify right side
    123,509.40x = 11,406,182,154.77
  5. Step 5: Solve for x
    x = 11,406,182,154.77/123,509.40
  6. Step 6: Final answer
    x = 92,350.72

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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.