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Finding the Fourth Proportional to 125,281.50, 172,969.11 and 111,829.74

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Solution

The fourth proportional to 125,281.50, 172,969.11 and 111,829.74 is: 154,397.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,281.50 : 172,969.11 = 111,829.74 : x
  2. Step 2: Convert to fraction form
    125,281.50/172,969.11 = 111,829.74/x
  3. Step 3: Cross multiply
    125,281.50x = 172,969.11 × 111,829.74
  4. Step 4: Simplify right side
    125,281.50x = 19,343,090,599.33
  5. Step 5: Solve for x
    x = 19,343,090,599.33/125,281.50
  6. Step 6: Final answer
    x = 154,397.02

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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.