Home / 157,740.80-217,681.17-86,120.81

Finding the Fourth Proportional to 157,740.80, 217,681.17 and 86,120.81

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Solution

The fourth proportional to 157,740.80, 217,681.17 and 86,120.81 is: 118,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,740.80 : 217,681.17 = 86,120.81 : x
  2. Step 2: Convert to fraction form
    157,740.80/217,681.17 = 86,120.81/x
  3. Step 3: Cross multiply
    157,740.80x = 217,681.17 × 86,120.81
  4. Step 4: Simplify right side
    157,740.80x = 18,746,879,226.35
  5. Step 5: Solve for x
    x = 18,746,879,226.35/157,740.80
  6. Step 6: Final answer
    x = 118,846.11

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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.