Home / 98,663.20-148,153.20-91,386.40

Finding the Fourth Proportional to 98,663.20, 148,153.20 and 91,386.40

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Solution

The fourth proportional to 98,663.20, 148,153.20 and 91,386.40 is: 137,226.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,663.20 : 148,153.20 = 91,386.40 : x
  2. Step 2: Convert to fraction form
    98,663.20/148,153.20 = 91,386.40/x
  3. Step 3: Cross multiply
    98,663.20x = 148,153.20 × 91,386.40
  4. Step 4: Simplify right side
    98,663.20x = 13,539,187,596.48
  5. Step 5: Solve for x
    x = 13,539,187,596.48/98,663.20
  6. Step 6: Final answer
    x = 137,226.32

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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.