Home / 142,319.18-213,513.80-100,281.36

Finding the Fourth Proportional to 142,319.18, 213,513.80 and 100,281.36

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Solution

The fourth proportional to 142,319.18, 213,513.80 and 100,281.36 is: 150,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,319.18 : 213,513.80 = 100,281.36 : x
  2. Step 2: Convert to fraction form
    142,319.18/213,513.80 = 100,281.36/x
  3. Step 3: Cross multiply
    142,319.18x = 213,513.80 × 100,281.36
  4. Step 4: Simplify right side
    142,319.18x = 21,411,453,741.36
  5. Step 5: Solve for x
    x = 21,411,453,741.36/142,319.18
  6. Step 6: Final answer
    x = 150,446.72

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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.