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Finding the Fourth Proportional to 172,860.50, 238,547.49 and 97,411.70

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Solution

The fourth proportional to 172,860.50, 238,547.49 and 97,411.70 is: 134,428.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,860.50 : 238,547.49 = 97,411.70 : x
  2. Step 2: Convert to fraction form
    172,860.50/238,547.49 = 97,411.70/x
  3. Step 3: Cross multiply
    172,860.50x = 238,547.49 × 97,411.70
  4. Step 4: Simplify right side
    172,860.50x = 23,237,316,531.63
  5. Step 5: Solve for x
    x = 23,237,316,531.63/172,860.50
  6. Step 6: Final answer
    x = 134,428.15

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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.