Home / 98,143.90-135,439.23-55,703.14

Finding the Fourth Proportional to 98,143.90, 135,439.23 and 55,703.14

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Solution

The fourth proportional to 98,143.90, 135,439.23 and 55,703.14 is: 76,870.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,143.90 : 135,439.23 = 55,703.14 : x
  2. Step 2: Convert to fraction form
    98,143.90/135,439.23 = 55,703.14/x
  3. Step 3: Cross multiply
    98,143.90x = 135,439.23 × 55,703.14
  4. Step 4: Simplify right side
    98,143.90x = 7,544,390,390.18
  5. Step 5: Solve for x
    x = 7,544,390,390.18/98,143.90
  6. Step 6: Final answer
    x = 76,870.70

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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.