Home / 138,464.76-191,091.45-77,215.10

Finding the Fourth Proportional to 138,464.76, 191,091.45 and 77,215.10

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Solution

The fourth proportional to 138,464.76, 191,091.45 and 77,215.10 is: 106,562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,464.76 : 191,091.45 = 77,215.10 : x
  2. Step 2: Convert to fraction form
    138,464.76/191,091.45 = 77,215.10/x
  3. Step 3: Cross multiply
    138,464.76x = 191,091.45 × 77,215.10
  4. Step 4: Simplify right side
    138,464.76x = 14,755,144,465.44
  5. Step 5: Solve for x
    x = 14,755,144,465.44/138,464.76
  6. Step 6: Final answer
    x = 106,562.45

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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.