Home / 104,971.14-157,520.43-42,640.02

Finding the Fourth Proportional to 104,971.14, 157,520.43 and 42,640.02

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Solution

The fourth proportional to 104,971.14, 157,520.43 and 42,640.02 is: 63,985.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,971.14 : 157,520.43 = 42,640.02 : x
  2. Step 2: Convert to fraction form
    104,971.14/157,520.43 = 42,640.02/x
  3. Step 3: Cross multiply
    104,971.14x = 157,520.43 × 42,640.02
  4. Step 4: Simplify right side
    104,971.14x = 6,716,674,285.61
  5. Step 5: Solve for x
    x = 6,716,674,285.61/104,971.14
  6. Step 6: Final answer
    x = 63,985.91

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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.