Home / 102,013.16-140,775.35-56,689.98

Finding the Fourth Proportional to 102,013.16, 140,775.35 and 56,689.98

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Solution

The fourth proportional to 102,013.16, 140,775.35 and 56,689.98 is: 78,230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,013.16 : 140,775.35 = 56,689.98 : x
  2. Step 2: Convert to fraction form
    102,013.16/140,775.35 = 56,689.98/x
  3. Step 3: Cross multiply
    102,013.16x = 140,775.35 × 56,689.98
  4. Step 4: Simplify right side
    102,013.16x = 7,980,551,283.52
  5. Step 5: Solve for x
    x = 7,980,551,283.52/102,013.16
  6. Step 6: Final answer
    x = 78,230.61

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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.