Home / 103,612.04-143,030.90-79,729.80

Finding the Fourth Proportional to 103,612.04, 143,030.90 and 79,729.80

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Solution

The fourth proportional to 103,612.04, 143,030.90 and 79,729.80 is: 110,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612.04 : 143,030.90 = 79,729.80 : x
  2. Step 2: Convert to fraction form
    103,612.04/143,030.90 = 79,729.80/x
  3. Step 3: Cross multiply
    103,612.04x = 143,030.90 × 79,729.80
  4. Step 4: Simplify right side
    103,612.04x = 11,403,825,050.82
  5. Step 5: Solve for x
    x = 11,403,825,050.82/103,612.04
  6. Step 6: Final answer
    x = 110,062.74

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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.