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Finding the Fourth Proportional to 124,486.98, 171,655.89 and 84,130.74

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Solution

The fourth proportional to 124,486.98, 171,655.89 and 84,130.74 is: 116,008.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,486.98 : 171,655.89 = 84,130.74 : x
  2. Step 2: Convert to fraction form
    124,486.98/171,655.89 = 84,130.74/x
  3. Step 3: Cross multiply
    124,486.98x = 171,655.89 × 84,130.74
  4. Step 4: Simplify right side
    124,486.98x = 14,441,537,051.06
  5. Step 5: Solve for x
    x = 14,441,537,051.06/124,486.98
  6. Step 6: Final answer
    x = 116,008.41

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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.