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Finding the Fourth Proportional to 138,762.18, 191,492.37 and 75,099.96

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Solution

The fourth proportional to 138,762.18, 191,492.37 and 75,099.96 is: 103,638.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,762.18 : 191,492.37 = 75,099.96 : x
  2. Step 2: Convert to fraction form
    138,762.18/191,492.37 = 75,099.96/x
  3. Step 3: Cross multiply
    138,762.18x = 191,492.37 × 75,099.96
  4. Step 4: Simplify right side
    138,762.18x = 14,381,069,327.31
  5. Step 5: Solve for x
    x = 14,381,069,327.31/138,762.18
  6. Step 6: Final answer
    x = 103,638.25

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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.