Home / 98,931.36-148,150.86-69,210.06

Finding the Fourth Proportional to 98,931.36, 148,150.86 and 69,210.06

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Solution

The fourth proportional to 98,931.36, 148,150.86 and 69,210.06 is: 103,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931.36 : 148,150.86 = 69,210.06 : x
  2. Step 2: Convert to fraction form
    98,931.36/148,150.86 = 69,210.06/x
  3. Step 3: Cross multiply
    98,931.36x = 148,150.86 × 69,210.06
  4. Step 4: Simplify right side
    98,931.36x = 10,253,529,909.65
  5. Step 5: Solve for x
    x = 10,253,529,909.65/98,931.36
  6. Step 6: Final answer
    x = 103,642.87

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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.