Home / 157,523,521.23-217,385,942.27-86,958,968.72

Finding the Fourth Proportional to 157,523,521.23, 217,385,942.27 and 86,958,968.72

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Solution

The fourth proportional to 157,523,521.23, 217,385,942.27 and 86,958,968.72 is: 120,005,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,523,521.23 : 217,385,942.27 = 86,958,968.72 : x
  2. Step 2: Convert to fraction form
    157,523,521.23/217,385,942.27 = 86,958,968.72/x
  3. Step 3: Cross multiply
    157,523,521.23x = 217,385,942.27 × 86,958,968.72
  4. Step 4: Simplify right side
    157,523,521.23x = 18,903,657,352,502,932
  5. Step 5: Solve for x
    x = 18,903,657,352,502,932/157,523,521.23
  6. Step 6: Final answer
    x = 120,005,299.56

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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.