Home / 115,142.63-158,897.85-67,397.00

Finding the Fourth Proportional to 115,142.63, 158,897.85 and 67,397.00

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Solution

The fourth proportional to 115,142.63, 158,897.85 and 67,397.00 is: 93,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,142.63 : 158,897.85 = 67,397.00 : x
  2. Step 2: Convert to fraction form
    115,142.63/158,897.85 = 67,397.00/x
  3. Step 3: Cross multiply
    115,142.63x = 158,897.85 × 67,397.00
  4. Step 4: Simplify right side
    115,142.63x = 10,709,237,349.22
  5. Step 5: Solve for x
    x = 10,709,237,349.22/115,142.63
  6. Step 6: Final answer
    x = 93,008.45

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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.