Home / 142,735.10-213,897.85-105,000.70

Finding the Fourth Proportional to 142,735.10, 213,897.85 and 105,000.70

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Solution

The fourth proportional to 142,735.10, 213,897.85 and 105,000.70 is: 157,350.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,735.10 : 213,897.85 = 105,000.70 : x
  2. Step 2: Convert to fraction form
    142,735.10/213,897.85 = 105,000.70/x
  3. Step 3: Cross multiply
    142,735.10x = 213,897.85 × 105,000.70
  4. Step 4: Simplify right side
    142,735.10x = 22,459,423,978.50
  5. Step 5: Solve for x
    x = 22,459,423,978.50/142,735.10
  6. Step 6: Final answer
    x = 157,350.39

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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.