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Finding the Fourth Proportional to 157,007.80, 235,166.10 and 139,497.40

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Solution

The fourth proportional to 157,007.80, 235,166.10 and 139,497.40 is: 208,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,007.80 : 235,166.10 = 139,497.40 : x
  2. Step 2: Convert to fraction form
    157,007.80/235,166.10 = 139,497.40/x
  3. Step 3: Cross multiply
    157,007.80x = 235,166.10 × 139,497.40
  4. Step 4: Simplify right side
    157,007.80x = 32,805,059,518.14
  5. Step 5: Solve for x
    x = 32,805,059,518.14/157,007.80
  6. Step 6: Final answer
    x = 208,939.04

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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.