Home / 128,305,220.40-192,457,830.60-127,549,393.20

Finding the Fourth Proportional to 128,305,220.40, 192,457,830.60 and 127,549,393.20

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Solution

The fourth proportional to 128,305,220.40, 192,457,830.60 and 127,549,393.20 is: 191,324,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,305,220.40 : 192,457,830.60 = 127,549,393.20 : x
  2. Step 2: Convert to fraction form
    128,305,220.40/192,457,830.60 = 127,549,393.20/x
  3. Step 3: Cross multiply
    128,305,220.40x = 192,457,830.60 × 127,549,393.20
  4. Step 4: Simplify right side
    128,305,220.40x = 24,547,879,509,618,392
  5. Step 5: Solve for x
    x = 24,547,879,509,618,392/128,305,220.40
  6. Step 6: Final answer
    x = 191,324,089.80

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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.