Home / 98,228.08-147,415.80-72,000.40

Finding the Fourth Proportional to 98,228.08, 147,415.80 and 72,000.40

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Solution

The fourth proportional to 98,228.08, 147,415.80 and 72,000.40 is: 108,054.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,228.08 : 147,415.80 = 72,000.40 : x
  2. Step 2: Convert to fraction form
    98,228.08/147,415.80 = 72,000.40/x
  3. Step 3: Cross multiply
    98,228.08x = 147,415.80 × 72,000.40
  4. Step 4: Simplify right side
    98,228.08x = 10,613,996,566.32
  5. Step 5: Solve for x
    x = 10,613,996,566.32/98,228.08
  6. Step 6: Final answer
    x = 108,054.61

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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.