Home / 123,430.40-185,145.60-40,332.80

Finding the Fourth Proportional to 123,430.40, 185,145.60 and 40,332.80

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Solution

The fourth proportional to 123,430.40, 185,145.60 and 40,332.80 is: 60,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,430.40 : 185,145.60 = 40,332.80 : x
  2. Step 2: Convert to fraction form
    123,430.40/185,145.60 = 40,332.80/x
  3. Step 3: Cross multiply
    123,430.40x = 185,145.60 × 40,332.80
  4. Step 4: Simplify right side
    123,430.40x = 7,467,440,455.68
  5. Step 5: Solve for x
    x = 7,467,440,455.68/123,430.40
  6. Step 6: Final answer
    x = 60,499.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.