Home / 138,401,300-207,602,152-56,520,179.28

Finding the Fourth Proportional to 138,401,300, 207,602,152 and 56,520,179.28

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Solution

The fourth proportional to 138,401,300, 207,602,152 and 56,520,179.28 is: 84,780,351.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,401,300 : 207,602,152 = 56,520,179.28 : x
  2. Step 2: Convert to fraction form
    138,401,300/207,602,152 = 56,520,179.28/x
  3. Step 3: Cross multiply
    138,401,300x = 207,602,152 × 56,520,179.28
  4. Step 4: Simplify right side
    138,401,300x = 11,733,710,849,953,810
  5. Step 5: Solve for x
    x = 11,733,710,849,953,810/138,401,300
  6. Step 6: Final answer
    x = 84,780,351.41

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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.