Home / 101,416.16-139,956.72-56,097.20

Finding the Fourth Proportional to 101,416.16, 139,956.72 and 56,097.20

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Solution

The fourth proportional to 101,416.16, 139,956.72 and 56,097.20 is: 77,415.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,416.16 : 139,956.72 = 56,097.20 : x
  2. Step 2: Convert to fraction form
    101,416.16/139,956.72 = 56,097.20/x
  3. Step 3: Cross multiply
    101,416.16x = 139,956.72 × 56,097.20
  4. Step 4: Simplify right side
    101,416.16x = 7,851,180,113.18
  5. Step 5: Solve for x
    x = 7,851,180,113.18/101,416.16
  6. Step 6: Final answer
    x = 77,415.47

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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.