Home / 210,875.43-316,280.64-68,720.35

Finding the Fourth Proportional to 210,875.43, 316,280.64 and 68,720.35

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Solution

The fourth proportional to 210,875.43, 316,280.64 and 68,720.35 is: 103,069.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,875.43 : 316,280.64 = 68,720.35 : x
  2. Step 2: Convert to fraction form
    210,875.43/316,280.64 = 68,720.35/x
  3. Step 3: Cross multiply
    210,875.43x = 316,280.64 × 68,720.35
  4. Step 4: Simplify right side
    210,875.43x = 21,734,916,279.02
  5. Step 5: Solve for x
    x = 21,734,916,279.02/210,875.43
  6. Step 6: Final answer
    x = 103,069.93

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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.