Home / 127,926.20-191,630.10-72,457.40

Finding the Fourth Proportional to 127,926.20, 191,630.10 and 72,457.40

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Solution

The fourth proportional to 127,926.20, 191,630.10 and 72,457.40 is: 108,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,926.20 : 191,630.10 = 72,457.40 : x
  2. Step 2: Convert to fraction form
    127,926.20/191,630.10 = 72,457.40/x
  3. Step 3: Cross multiply
    127,926.20x = 191,630.10 × 72,457.40
  4. Step 4: Simplify right side
    127,926.20x = 13,885,018,807.74
  5. Step 5: Solve for x
    x = 13,885,018,807.74/127,926.20
  6. Step 6: Final answer
    x = 108,539.29

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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.