Home / 100,368.34-138,507.91-55,045.13

Finding the Fourth Proportional to 100,368.34, 138,507.91 and 55,045.13

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Solution

The fourth proportional to 100,368.34, 138,507.91 and 55,045.13 is: 75,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,368.34 : 138,507.91 = 55,045.13 : x
  2. Step 2: Convert to fraction form
    100,368.34/138,507.91 = 55,045.13/x
  3. Step 3: Cross multiply
    100,368.34x = 138,507.91 × 55,045.13
  4. Step 4: Simplify right side
    100,368.34x = 7,624,185,081.83
  5. Step 5: Solve for x
    x = 7,624,185,081.83/100,368.34
  6. Step 6: Final answer
    x = 75,962.05

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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.