Home / 102,011.51-140,766.93-56,686.64

Finding the Fourth Proportional to 102,011.51, 140,766.93 and 56,686.64

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Solution

The fourth proportional to 102,011.51, 140,766.93 and 56,686.64 is: 78,222.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,011.51 : 140,766.93 = 56,686.64 : x
  2. Step 2: Convert to fraction form
    102,011.51/140,766.93 = 56,686.64/x
  3. Step 3: Cross multiply
    102,011.51x = 140,766.93 × 56,686.64
  4. Step 4: Simplify right side
    102,011.51x = 7,979,603,580.98
  5. Step 5: Solve for x
    x = 7,979,603,580.98/102,011.51
  6. Step 6: Final answer
    x = 78,222.58

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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.