Home / 138,688.92-191,390.05-75,026.16

Finding the Fourth Proportional to 138,688.92, 191,390.05 and 75,026.16

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Solution

The fourth proportional to 138,688.92, 191,390.05 and 75,026.16 is: 103,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,688.92 : 191,390.05 = 75,026.16 : x
  2. Step 2: Convert to fraction form
    138,688.92/191,390.05 = 75,026.16/x
  3. Step 3: Cross multiply
    138,688.92x = 191,390.05 × 75,026.16
  4. Step 4: Simplify right side
    138,688.92x = 14,359,260,513.71
  5. Step 5: Solve for x
    x = 14,359,260,513.71/138,688.92
  6. Step 6: Final answer
    x = 103,535.74

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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.