Home / 101,259.12-139,738.04-55,319.40

Finding the Fourth Proportional to 101,259.12, 139,738.04 and 55,319.40

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Solution

The fourth proportional to 101,259.12, 139,738.04 and 55,319.40 is: 76,341.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,259.12 : 139,738.04 = 55,319.40 : x
  2. Step 2: Convert to fraction form
    101,259.12/139,738.04 = 55,319.40/x
  3. Step 3: Cross multiply
    101,259.12x = 139,738.04 × 55,319.40
  4. Step 4: Simplify right side
    101,259.12x = 7,730,224,529.98
  5. Step 5: Solve for x
    x = 7,730,224,529.98/101,259.12
  6. Step 6: Final answer
    x = 76,341.02

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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.