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Finding the Fourth Proportional to 172,459.13, 258,678.03 and 64,367.45

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Solution

The fourth proportional to 172,459.13, 258,678.03 and 64,367.45 is: 96,547.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,459.13 : 258,678.03 = 64,367.45 : x
  2. Step 2: Convert to fraction form
    172,459.13/258,678.03 = 64,367.45/x
  3. Step 3: Cross multiply
    172,459.13x = 258,678.03 × 64,367.45
  4. Step 4: Simplify right side
    172,459.13x = 16,650,445,162.12
  5. Step 5: Solve for x
    x = 16,650,445,162.12/172,459.13
  6. Step 6: Final answer
    x = 96,547.19

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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.