Home / 137,159.02-189,279.72-76,730.67

Finding the Fourth Proportional to 137,159.02, 189,279.72 and 76,730.67

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Solution

The fourth proportional to 137,159.02, 189,279.72 and 76,730.67 is: 105,888.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,159.02 : 189,279.72 = 76,730.67 : x
  2. Step 2: Convert to fraction form
    137,159.02/189,279.72 = 76,730.67/x
  3. Step 3: Cross multiply
    137,159.02x = 189,279.72 × 76,730.67
  4. Step 4: Simplify right side
    137,159.02x = 14,523,560,020.75
  5. Step 5: Solve for x
    x = 14,523,560,020.75/137,159.02
  6. Step 6: Final answer
    x = 105,888.48

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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.