Home / 122,039.65-182,317.30-78,994.40

Finding the Fourth Proportional to 122,039.65, 182,317.30 and 78,994.40

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Solution

The fourth proportional to 122,039.65, 182,317.30 and 78,994.40 is: 118,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,039.65 : 182,317.30 = 78,994.40 : x
  2. Step 2: Convert to fraction form
    122,039.65/182,317.30 = 78,994.40/x
  3. Step 3: Cross multiply
    122,039.65x = 182,317.30 × 78,994.40
  4. Step 4: Simplify right side
    122,039.65x = 14,402,045,297.74
  5. Step 5: Solve for x
    x = 14,402,045,297.74/122,039.65
  6. Step 6: Final answer
    x = 118,011.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.