Home / 101,422.04-139,967.36-56,099.84

Finding the Fourth Proportional to 101,422.04, 139,967.36 and 56,099.84

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Solution

The fourth proportional to 101,422.04, 139,967.36 and 56,099.84 is: 77,420.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,422.04 : 139,967.36 = 56,099.84 : x
  2. Step 2: Convert to fraction form
    101,422.04/139,967.36 = 56,099.84/x
  3. Step 3: Cross multiply
    101,422.04x = 139,967.36 × 56,099.84
  4. Step 4: Simplify right side
    101,422.04x = 7,852,146,501.22
  5. Step 5: Solve for x
    x = 7,852,146,501.22/101,422.04
  6. Step 6: Final answer
    x = 77,420.51

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1.5x scale

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.