Home / 215,152.20-296,788.86-129,088.89

Finding the Fourth Proportional to 215,152.20, 296,788.86 and 129,088.89

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Solution

The fourth proportional to 215,152.20, 296,788.86 and 129,088.89 is: 178,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,152.20 : 296,788.86 = 129,088.89 : x
  2. Step 2: Convert to fraction form
    215,152.20/296,788.86 = 129,088.89/x
  3. Step 3: Cross multiply
    215,152.20x = 296,788.86 × 129,088.89
  4. Step 4: Simplify right side
    215,152.20x = 38,312,144,501.77
  5. Step 5: Solve for x
    x = 38,312,144,501.77/215,152.20
  6. Step 6: Final answer
    x = 178,069.96

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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.