Home / 112,591,897.40-155,395,408.96-77,280,693.81

Finding the Fourth Proportional to 112,591,897.40, 155,395,408.96 and 77,280,693.81

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Solution

The fourth proportional to 112,591,897.40, 155,395,408.96 and 77,280,693.81 is: 106,660,117.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,591,897.40 : 155,395,408.96 = 77,280,693.81 : x
  2. Step 2: Convert to fraction form
    112,591,897.40/155,395,408.96 = 77,280,693.81/x
  3. Step 3: Cross multiply
    112,591,897.40x = 155,395,408.96 × 77,280,693.81
  4. Step 4: Simplify right side
    112,591,897.40x = 12,009,065,020,359,434
  5. Step 5: Solve for x
    x = 12,009,065,020,359,434/112,591,897.40
  6. Step 6: Final answer
    x = 106,660,117.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.