Home / 210,701.12-315,985.80-70,426.94

Finding the Fourth Proportional to 210,701.12, 315,985.80 and 70,426.94

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Solution

The fourth proportional to 210,701.12, 315,985.80 and 70,426.94 is: 105,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,701.12 : 315,985.80 = 70,426.94 : x
  2. Step 2: Convert to fraction form
    210,701.12/315,985.80 = 70,426.94/x
  3. Step 3: Cross multiply
    210,701.12x = 315,985.80 × 70,426.94
  4. Step 4: Simplify right side
    210,701.12x = 22,253,912,977.45
  5. Step 5: Solve for x
    x = 22,253,912,977.45/210,701.12
  6. Step 6: Final answer
    x = 105,618.39

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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.