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Finding the Fourth Proportional to 124,528, 171,848.68 and 79,816

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Solution

The fourth proportional to 124,528, 171,848.68 and 79,816 is: 110,146.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,528 : 171,848.68 = 79,816 : x
  2. Step 2: Convert to fraction form
    124,528/171,848.68 = 79,816/x
  3. Step 3: Cross multiply
    124,528x = 171,848.68 × 79,816
  4. Step 4: Simplify right side
    124,528x = 13,716,274,242.88
  5. Step 5: Solve for x
    x = 13,716,274,242.88/124,528
  6. Step 6: Final answer
    x = 110,146.11

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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.