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Finding the Fourth Proportional to 125,299.69, 172,746.27 and 99,543.68

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Solution

The fourth proportional to 125,299.69, 172,746.27 and 99,543.68 is: 137,237.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,299.69 : 172,746.27 = 99,543.68 : x
  2. Step 2: Convert to fraction form
    125,299.69/172,746.27 = 99,543.68/x
  3. Step 3: Cross multiply
    125,299.69x = 172,746.27 × 99,543.68
  4. Step 4: Simplify right side
    125,299.69x = 17,195,799,422.07
  5. Step 5: Solve for x
    x = 17,195,799,422.07/125,299.69
  6. Step 6: Final answer
    x = 137,237.37

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1.5x scale

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.