Home / 138,677.16-191,374.35-75,014.81

Finding the Fourth Proportional to 138,677.16, 191,374.35 and 75,014.81

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Solution

The fourth proportional to 138,677.16, 191,374.35 and 75,014.81 is: 103,520.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,677.16 : 191,374.35 = 75,014.81 : x
  2. Step 2: Convert to fraction form
    138,677.16/191,374.35 = 75,014.81/x
  3. Step 3: Cross multiply
    138,677.16x = 191,374.35 × 75,014.81
  4. Step 4: Simplify right side
    138,677.16x = 14,355,909,983.60
  5. Step 5: Solve for x
    x = 14,355,909,983.60/138,677.16
  6. Step 6: Final answer
    x = 103,520.36

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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.