Home / 90,053.32-134,437.08-78,246.76

Finding the Fourth Proportional to 90,053.32, 134,437.08 and 78,246.76

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Solution

The fourth proportional to 90,053.32, 134,437.08 and 78,246.76 is: 116,811.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,053.32 : 134,437.08 = 78,246.76 : x
  2. Step 2: Convert to fraction form
    90,053.32/134,437.08 = 78,246.76/x
  3. Step 3: Cross multiply
    90,053.32x = 134,437.08 × 78,246.76
  4. Step 4: Simplify right side
    90,053.32x = 10,519,265,933.86
  5. Step 5: Solve for x
    x = 10,519,265,933.86/90,053.32
  6. Step 6: Final answer
    x = 116,811.53

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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.