Home / 138,696.02-191,398.64-77,443.16

Finding the Fourth Proportional to 138,696.02, 191,398.64 and 77,443.16

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Solution

The fourth proportional to 138,696.02, 191,398.64 and 77,443.16 is: 106,870.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,696.02 : 191,398.64 = 77,443.16 : x
  2. Step 2: Convert to fraction form
    138,696.02/191,398.64 = 77,443.16/x
  3. Step 3: Cross multiply
    138,696.02x = 191,398.64 × 77,443.16
  4. Step 4: Simplify right side
    138,696.02x = 14,822,515,501.30
  5. Step 5: Solve for x
    x = 14,822,515,501.30/138,696.02
  6. Step 6: Final answer
    x = 106,870.52

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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.