Home / 103,699.02-155,359.64-72,042.14

Finding the Fourth Proportional to 103,699.02, 155,359.64 and 72,042.14

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Solution

The fourth proportional to 103,699.02, 155,359.64 and 72,042.14 is: 107,931.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.02 : 155,359.64 = 72,042.14 : x
  2. Step 2: Convert to fraction form
    103,699.02/155,359.64 = 72,042.14/x
  3. Step 3: Cross multiply
    103,699.02x = 155,359.64 × 72,042.14
  4. Step 4: Simplify right side
    103,699.02x = 11,192,440,935.23
  5. Step 5: Solve for x
    x = 11,192,440,935.23/103,699.02
  6. Step 6: Final answer
    x = 107,931.98

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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.