Home / 153,133.20-229,746.51-78,305.87

Finding the Fourth Proportional to 153,133.20, 229,746.51 and 78,305.87

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Solution

The fourth proportional to 153,133.20, 229,746.51 and 78,305.87 is: 117,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,133.20 : 229,746.51 = 78,305.87 : x
  2. Step 2: Convert to fraction form
    153,133.20/229,746.51 = 78,305.87/x
  3. Step 3: Cross multiply
    153,133.20x = 229,746.51 × 78,305.87
  4. Step 4: Simplify right side
    153,133.20x = 17,990,500,919.38
  5. Step 5: Solve for x
    x = 17,990,500,919.38/153,133.20
  6. Step 6: Final answer
    x = 117,482.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.