Home / 82,359.84-122,937-70,747.68

Finding the Fourth Proportional to 82,359.84, 122,937 and 70,747.68

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Solution

The fourth proportional to 82,359.84, 122,937 and 70,747.68 is: 105,603.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,359.84 : 122,937 = 70,747.68 : x
  2. Step 2: Convert to fraction form
    82,359.84/122,937 = 70,747.68/x
  3. Step 3: Cross multiply
    82,359.84x = 122,937 × 70,747.68
  4. Step 4: Simplify right side
    82,359.84x = 8,697,507,536.16
  5. Step 5: Solve for x
    x = 8,697,507,536.16/82,359.84
  6. Step 6: Final answer
    x = 105,603.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.