Home / 115,479.08-159,358.04-64,490.40

Finding the Fourth Proportional to 115,479.08, 159,358.04 and 64,490.40

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Solution

The fourth proportional to 115,479.08, 159,358.04 and 64,490.40 is: 88,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,479.08 : 159,358.04 = 64,490.40 : x
  2. Step 2: Convert to fraction form
    115,479.08/159,358.04 = 64,490.40/x
  3. Step 3: Cross multiply
    115,479.08x = 159,358.04 × 64,490.40
  4. Step 4: Simplify right side
    115,479.08x = 10,277,063,742.82
  5. Step 5: Solve for x
    x = 10,277,063,742.82/115,479.08
  6. Step 6: Final answer
    x = 88,995.03

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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.