Home / 101,118.55-139,571.36-58,690.75

Finding the Fourth Proportional to 101,118.55, 139,571.36 and 58,690.75

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Solution

The fourth proportional to 101,118.55, 139,571.36 and 58,690.75 is: 81,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,118.55 : 139,571.36 = 58,690.75 : x
  2. Step 2: Convert to fraction form
    101,118.55/139,571.36 = 58,690.75/x
  3. Step 3: Cross multiply
    101,118.55x = 139,571.36 × 58,690.75
  4. Step 4: Simplify right side
    101,118.55x = 8,191,547,503.47
  5. Step 5: Solve for x
    x = 8,191,547,503.47/101,118.55
  6. Step 6: Final answer
    x = 81,009.35

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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.