Home / 100,900.72-139,097.55-70,592.14

Finding the Fourth Proportional to 100,900.72, 139,097.55 and 70,592.14

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Solution

The fourth proportional to 100,900.72, 139,097.55 and 70,592.14 is: 97,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,900.72 : 139,097.55 = 70,592.14 : x
  2. Step 2: Convert to fraction form
    100,900.72/139,097.55 = 70,592.14/x
  3. Step 3: Cross multiply
    100,900.72x = 139,097.55 × 70,592.14
  4. Step 4: Simplify right side
    100,900.72x = 9,819,193,723.26
  5. Step 5: Solve for x
    x = 9,819,193,723.26/100,900.72
  6. Step 6: Final answer
    x = 97,315.40

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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.