Home / 142,631.20-213,946.80-89,869.60

Finding the Fourth Proportional to 142,631.20, 213,946.80 and 89,869.60

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Solution

The fourth proportional to 142,631.20, 213,946.80 and 89,869.60 is: 134,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,631.20 : 213,946.80 = 89,869.60 : x
  2. Step 2: Convert to fraction form
    142,631.20/213,946.80 = 89,869.60/x
  3. Step 3: Cross multiply
    142,631.20x = 213,946.80 × 89,869.60
  4. Step 4: Simplify right side
    142,631.20x = 19,227,313,337.28
  5. Step 5: Solve for x
    x = 19,227,313,337.28/142,631.20
  6. Step 6: Final answer
    x = 134,804.40

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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.