Home / 142,029,650.31-212,856,133.74-72,939,663.10

Finding the Fourth Proportional to 142,029,650.31, 212,856,133.74 and 72,939,663.10

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Solution

The fourth proportional to 142,029,650.31, 212,856,133.74 and 72,939,663.10 is: 109,312,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,029,650.31 : 212,856,133.74 = 72,939,663.10 : x
  2. Step 2: Convert to fraction form
    142,029,650.31/212,856,133.74 = 72,939,663.10/x
  3. Step 3: Cross multiply
    142,029,650.31x = 212,856,133.74 × 72,939,663.10
  4. Step 4: Simplify right side
    142,029,650.31x = 15,525,654,683,764,142
  5. Step 5: Solve for x
    x = 15,525,654,683,764,142/142,029,650.31
  6. Step 6: Final answer
    x = 109,312,771.31

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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.