Home / 117,436.16-162,051.20-69,681.28

Finding the Fourth Proportional to 117,436.16, 162,051.20 and 69,681.28

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Solution

The fourth proportional to 117,436.16, 162,051.20 and 69,681.28 is: 96,153.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,436.16 : 162,051.20 = 69,681.28 : x
  2. Step 2: Convert to fraction form
    117,436.16/162,051.20 = 69,681.28/x
  3. Step 3: Cross multiply
    117,436.16x = 162,051.20 × 69,681.28
  4. Step 4: Simplify right side
    117,436.16x = 11,291,935,041.54
  5. Step 5: Solve for x
    x = 11,291,935,041.54/117,436.16
  6. Step 6: Final answer
    x = 96,153.82

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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.