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Finding the Fourth Proportional to 138,762.55, 191,492.85 and 75,100.33

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Solution

The fourth proportional to 138,762.55, 191,492.85 and 75,100.33 is: 103,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,762.55 : 191,492.85 = 75,100.33 : x
  2. Step 2: Convert to fraction form
    138,762.55/191,492.85 = 75,100.33/x
  3. Step 3: Cross multiply
    138,762.55x = 191,492.85 × 75,100.33
  4. Step 4: Simplify right side
    138,762.55x = 14,381,176,227.64
  5. Step 5: Solve for x
    x = 14,381,176,227.64/138,762.55
  6. Step 6: Final answer
    x = 103,638.74

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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.