Home / 131,108,981.40-196,663,472.10-69,886,978.20

Finding the Fourth Proportional to 131,108,981.40, 196,663,472.10 and 69,886,978.20

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Solution

The fourth proportional to 131,108,981.40, 196,663,472.10 and 69,886,978.20 is: 104,830,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,108,981.40 : 196,663,472.10 = 69,886,978.20 : x
  2. Step 2: Convert to fraction form
    131,108,981.40/196,663,472.10 = 69,886,978.20/x
  3. Step 3: Cross multiply
    131,108,981.40x = 196,663,472.10 × 69,886,978.20
  4. Step 4: Simplify right side
    131,108,981.40x = 13,744,215,787,389,008
  5. Step 5: Solve for x
    x = 13,744,215,787,389,008/131,108,981.40
  6. Step 6: Final answer
    x = 104,830,467.30

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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.