Home / 122,638.14-169,259.99-71,681.04

Finding the Fourth Proportional to 122,638.14, 169,259.99 and 71,681.04

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Solution

The fourth proportional to 122,638.14, 169,259.99 and 71,681.04 is: 98,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,638.14 : 169,259.99 = 71,681.04 : x
  2. Step 2: Convert to fraction form
    122,638.14/169,259.99 = 71,681.04/x
  3. Step 3: Cross multiply
    122,638.14x = 169,259.99 × 71,681.04
  4. Step 4: Simplify right side
    122,638.14x = 12,132,731,755.18
  5. Step 5: Solve for x
    x = 12,132,731,755.18/122,638.14
  6. Step 6: Final answer
    x = 98,931.15

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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.