Home / 98,618.86-136,060.78-56,147.32

Finding the Fourth Proportional to 98,618.86, 136,060.78 and 56,147.32

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Solution

The fourth proportional to 98,618.86, 136,060.78 and 56,147.32 is: 77,464.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,618.86 : 136,060.78 = 56,147.32 : x
  2. Step 2: Convert to fraction form
    98,618.86/136,060.78 = 56,147.32/x
  3. Step 3: Cross multiply
    98,618.86x = 136,060.78 × 56,147.32
  4. Step 4: Simplify right side
    98,618.86x = 7,639,448,154.11
  5. Step 5: Solve for x
    x = 7,639,448,154.11/98,618.86
  6. Step 6: Final answer
    x = 77,464.37

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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.