Home / 98,700.63-136,207.27-53,378.61

Finding the Fourth Proportional to 98,700.63, 136,207.27 and 53,378.61

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Solution

The fourth proportional to 98,700.63, 136,207.27 and 53,378.61 is: 73,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,700.63 : 136,207.27 = 53,378.61 : x
  2. Step 2: Convert to fraction form
    98,700.63/136,207.27 = 53,378.61/x
  3. Step 3: Cross multiply
    98,700.63x = 136,207.27 × 53,378.61
  4. Step 4: Simplify right side
    98,700.63x = 7,270,554,744.49
  5. Step 5: Solve for x
    x = 7,270,554,744.49/98,700.63
  6. Step 6: Final answer
    x = 73,662.70

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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.