Home / 90,133.85-135,127.86-55,061.66

Finding the Fourth Proportional to 90,133.85, 135,127.86 and 55,061.66

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Solution

The fourth proportional to 90,133.85, 135,127.86 and 55,061.66 is: 82,547.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,133.85 : 135,127.86 = 55,061.66 : x
  2. Step 2: Convert to fraction form
    90,133.85/135,127.86 = 55,061.66/x
  3. Step 3: Cross multiply
    90,133.85x = 135,127.86 × 55,061.66
  4. Step 4: Simplify right side
    90,133.85x = 7,440,364,283.85
  5. Step 5: Solve for x
    x = 7,440,364,283.85/90,133.85
  6. Step 6: Final answer
    x = 82,547.95

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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.