Home / 157,631.04-217,522.80-86,007.60

Finding the Fourth Proportional to 157,631.04, 217,522.80 and 86,007.60

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Solution

The fourth proportional to 157,631.04, 217,522.80 and 86,007.60 is: 118,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,631.04 : 217,522.80 = 86,007.60 : x
  2. Step 2: Convert to fraction form
    157,631.04/217,522.80 = 86,007.60/x
  3. Step 3: Cross multiply
    157,631.04x = 217,522.80 × 86,007.60
  4. Step 4: Simplify right side
    157,631.04x = 18,708,613,973.28
  5. Step 5: Solve for x
    x = 18,708,613,973.28/157,631.04
  6. Step 6: Final answer
    x = 118,686.10

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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.