Home / 112,762,217.40-169,143,326.10-78,749,993.40

Finding the Fourth Proportional to 112,762,217.40, 169,143,326.10 and 78,749,993.40

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Solution

The fourth proportional to 112,762,217.40, 169,143,326.10 and 78,749,993.40 is: 118,124,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,762,217.40 : 169,143,326.10 = 78,749,993.40 : x
  2. Step 2: Convert to fraction form
    112,762,217.40/169,143,326.10 = 78,749,993.40/x
  3. Step 3: Cross multiply
    112,762,217.40x = 169,143,326.10 × 78,749,993.40
  4. Step 4: Simplify right side
    112,762,217.40x = 13,320,035,814,029,048
  5. Step 5: Solve for x
    x = 13,320,035,814,029,048/112,762,217.40
  6. Step 6: Final answer
    x = 118,124,990.10

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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.