Home / 134,529.31-185,663.55-100,478.68

Finding the Fourth Proportional to 134,529.31, 185,663.55 and 100,478.68

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Solution

The fourth proportional to 134,529.31, 185,663.55 and 100,478.68 is: 138,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,529.31 : 185,663.55 = 100,478.68 : x
  2. Step 2: Convert to fraction form
    134,529.31/185,663.55 = 100,478.68/x
  3. Step 3: Cross multiply
    134,529.31x = 185,663.55 × 100,478.68
  4. Step 4: Simplify right side
    134,529.31x = 18,655,228,428.11
  5. Step 5: Solve for x
    x = 18,655,228,428.11/134,529.31
  6. Step 6: Final answer
    x = 138,670.36

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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.