Home / 100,065.52-138,077.22-64,303.84

Finding the Fourth Proportional to 100,065.52, 138,077.22 and 64,303.84

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Solution

The fourth proportional to 100,065.52, 138,077.22 and 64,303.84 is: 88,730.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,065.52 : 138,077.22 = 64,303.84 : x
  2. Step 2: Convert to fraction form
    100,065.52/138,077.22 = 64,303.84/x
  3. Step 3: Cross multiply
    100,065.52x = 138,077.22 × 64,303.84
  4. Step 4: Simplify right side
    100,065.52x = 8,878,895,462.52
  5. Step 5: Solve for x
    x = 8,878,895,462.52/100,065.52
  6. Step 6: Final answer
    x = 88,730.82

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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.