Home / 136,020.18-187,734.72-86,930.40

Finding the Fourth Proportional to 136,020.18, 187,734.72 and 86,930.40

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Solution

The fourth proportional to 136,020.18, 187,734.72 and 86,930.40 is: 119,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,020.18 : 187,734.72 = 86,930.40 : x
  2. Step 2: Convert to fraction form
    136,020.18/187,734.72 = 86,930.40/x
  3. Step 3: Cross multiply
    136,020.18x = 187,734.72 × 86,930.40
  4. Step 4: Simplify right side
    136,020.18x = 16,319,854,303.49
  5. Step 5: Solve for x
    x = 16,319,854,303.49/136,020.18
  6. Step 6: Final answer
    x = 119,981.13

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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.