Home / 99,143.64-148,770-42,984.18

Finding the Fourth Proportional to 99,143.64, 148,770 and 42,984.18

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Solution

The fourth proportional to 99,143.64, 148,770 and 42,984.18 is: 64,499.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,143.64 : 148,770 = 42,984.18 : x
  2. Step 2: Convert to fraction form
    99,143.64/148,770 = 42,984.18/x
  3. Step 3: Cross multiply
    99,143.64x = 148,770 × 42,984.18
  4. Step 4: Simplify right side
    99,143.64x = 6,394,756,458.60
  5. Step 5: Solve for x
    x = 6,394,756,458.60/99,143.64
  6. Step 6: Final answer
    x = 64,499.92

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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.