Home / 128,385,282.63-177,156,743.19-71,873,123.07

Finding the Fourth Proportional to 128,385,282.63, 177,156,743.19 and 71,873,123.07

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Solution

The fourth proportional to 128,385,282.63, 177,156,743.19 and 71,873,123.07 is: 99,176,542.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,385,282.63 : 177,156,743.19 = 71,873,123.07 : x
  2. Step 2: Convert to fraction form
    128,385,282.63/177,156,743.19 = 71,873,123.07/x
  3. Step 3: Cross multiply
    128,385,282.63x = 177,156,743.19 × 71,873,123.07
  4. Step 4: Simplify right side
    128,385,282.63x = 12,732,808,405,975,252
  5. Step 5: Solve for x
    x = 12,732,808,405,975,252/128,385,282.63
  6. Step 6: Final answer
    x = 99,176,542.24

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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.