Home / 145,288.03-217,526.03-78,488.85

Finding the Fourth Proportional to 145,288.03, 217,526.03 and 78,488.85

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Solution

The fourth proportional to 145,288.03, 217,526.03 and 78,488.85 is: 117,513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,288.03 : 217,526.03 = 78,488.85 : x
  2. Step 2: Convert to fraction form
    145,288.03/217,526.03 = 78,488.85/x
  3. Step 3: Cross multiply
    145,288.03x = 217,526.03 × 78,488.85
  4. Step 4: Simplify right side
    145,288.03x = 17,073,367,939.77
  5. Step 5: Solve for x
    x = 17,073,367,939.77/145,288.03
  6. Step 6: Final answer
    x = 117,513.93

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1.5x scale

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.