Home / 145,060.96-217,590.39-78,921.52

Finding the Fourth Proportional to 145,060.96, 217,590.39 and 78,921.52

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Solution

The fourth proportional to 145,060.96, 217,590.39 and 78,921.52 is: 118,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,060.96 : 217,590.39 = 78,921.52 : x
  2. Step 2: Convert to fraction form
    145,060.96/217,590.39 = 78,921.52/x
  3. Step 3: Cross multiply
    145,060.96x = 217,590.39 × 78,921.52
  4. Step 4: Simplify right side
    145,060.96x = 17,172,564,316.19
  5. Step 5: Solve for x
    x = 17,172,564,316.19/145,060.96
  6. Step 6: Final answer
    x = 118,381.71

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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.