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Finding the Fourth Proportional to 127,810.70, 191,802.45 and 71,650.70

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Solution

The fourth proportional to 127,810.70, 191,802.45 and 71,650.70 is: 107,524.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,810.70 : 191,802.45 = 71,650.70 : x
  2. Step 2: Convert to fraction form
    127,810.70/191,802.45 = 71,650.70/x
  3. Step 3: Cross multiply
    127,810.70x = 191,802.45 × 71,650.70
  4. Step 4: Simplify right side
    127,810.70x = 13,742,779,804.22
  5. Step 5: Solve for x
    x = 13,742,779,804.22/127,810.70
  6. Step 6: Final answer
    x = 107,524.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.