Home / 123,134,715.36-169,851,869.76-81,319,165.92

Finding the Fourth Proportional to 123,134,715.36, 169,851,869.76 and 81,319,165.92

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Solution

The fourth proportional to 123,134,715.36, 169,851,869.76 and 81,319,165.92 is: 112,171,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,134,715.36 : 169,851,869.76 = 81,319,165.92 : x
  2. Step 2: Convert to fraction form
    123,134,715.36/169,851,869.76 = 81,319,165.92/x
  3. Step 3: Cross multiply
    123,134,715.36x = 169,851,869.76 × 81,319,165.92
  4. Step 4: Simplify right side
    123,134,715.36x = 13,812,212,378,835,670
  5. Step 5: Solve for x
    x = 13,812,212,378,835,670/123,134,715.36
  6. Step 6: Final answer
    x = 112,171,554.05

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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.