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Finding the Fourth Proportional to 139,459.50, 209,948.13 and 127,059.22

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Solution

The fourth proportional to 139,459.50, 209,948.13 and 127,059.22 is: 191,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,459.50 : 209,948.13 = 127,059.22 : x
  2. Step 2: Convert to fraction form
    139,459.50/209,948.13 = 127,059.22/x
  3. Step 3: Cross multiply
    139,459.50x = 209,948.13 × 127,059.22
  4. Step 4: Simplify right side
    139,459.50x = 26,675,845,638.26
  5. Step 5: Solve for x
    x = 26,675,845,638.26/139,459.50
  6. Step 6: Final answer
    x = 191,280.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.