Home / 145,932.39-201,386.32-78,864.39

Finding the Fourth Proportional to 145,932.39, 201,386.32 and 78,864.39

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Solution

The fourth proportional to 145,932.39, 201,386.32 and 78,864.39 is: 108,832.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,932.39 : 201,386.32 = 78,864.39 : x
  2. Step 2: Convert to fraction form
    145,932.39/201,386.32 = 78,864.39/x
  3. Step 3: Cross multiply
    145,932.39x = 201,386.32 × 78,864.39
  4. Step 4: Simplify right side
    145,932.39x = 15,882,209,083.98
  5. Step 5: Solve for x
    x = 15,882,209,083.98/145,932.39
  6. Step 6: Final answer
    x = 108,832.65

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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.