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Finding the Fourth Proportional to 125,214.66, 172,762.59 and 71,488.98

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Solution

The fourth proportional to 125,214.66, 172,762.59 and 71,488.98 is: 98,635.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,214.66 : 172,762.59 = 71,488.98 : x
  2. Step 2: Convert to fraction form
    125,214.66/172,762.59 = 71,488.98/x
  3. Step 3: Cross multiply
    125,214.66x = 172,762.59 × 71,488.98
  4. Step 4: Simplify right side
    125,214.66x = 12,350,621,341.26
  5. Step 5: Solve for x
    x = 12,350,621,341.26/125,214.66
  6. Step 6: Final answer
    x = 98,635.59

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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.