Home / 112,955,862.45-169,433,793.68-78,518,485.65

Finding the Fourth Proportional to 112,955,862.45, 169,433,793.68 and 78,518,485.65

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Solution

The fourth proportional to 112,955,862.45, 169,433,793.68 and 78,518,485.65 is: 117,777,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,955,862.45 : 169,433,793.68 = 78,518,485.65 : x
  2. Step 2: Convert to fraction form
    112,955,862.45/169,433,793.68 = 78,518,485.65/x
  3. Step 3: Cross multiply
    112,955,862.45x = 169,433,793.68 × 78,518,485.65
  4. Step 4: Simplify right side
    112,955,862.45x = 13,303,684,897,295,550
  5. Step 5: Solve for x
    x = 13,303,684,897,295,550/112,955,862.45
  6. Step 6: Final answer
    x = 117,777,728.48

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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.