Home / 90,988.04-136,278.96-69,771.81

Finding the Fourth Proportional to 90,988.04, 136,278.96 and 69,771.81

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Solution

The fourth proportional to 90,988.04, 136,278.96 and 69,771.81 is: 104,501.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,988.04 : 136,278.96 = 69,771.81 : x
  2. Step 2: Convert to fraction form
    90,988.04/136,278.96 = 69,771.81/x
  3. Step 3: Cross multiply
    90,988.04x = 136,278.96 × 69,771.81
  4. Step 4: Simplify right side
    90,988.04x = 9,508,429,953.52
  5. Step 5: Solve for x
    x = 9,508,429,953.52/90,988.04
  6. Step 6: Final answer
    x = 104,501.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.