Home / 136,158.64-187,887.76-78,802.16

Finding the Fourth Proportional to 136,158.64, 187,887.76 and 78,802.16

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Solution

The fourth proportional to 136,158.64, 187,887.76 and 78,802.16 is: 108,740.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,158.64 : 187,887.76 = 78,802.16 : x
  2. Step 2: Convert to fraction form
    136,158.64/187,887.76 = 78,802.16/x
  3. Step 3: Cross multiply
    136,158.64x = 187,887.76 × 78,802.16
  4. Step 4: Simplify right side
    136,158.64x = 14,805,960,189.12
  5. Step 5: Solve for x
    x = 14,805,960,189.12/136,158.64
  6. Step 6: Final answer
    x = 108,740.51

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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.