Home / 142,400.60-213,309.30-72,319.40

Finding the Fourth Proportional to 142,400.60, 213,309.30 and 72,319.40

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Solution

The fourth proportional to 142,400.60, 213,309.30 and 72,319.40 is: 108,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,400.60 : 213,309.30 = 72,319.40 : x
  2. Step 2: Convert to fraction form
    142,400.60/213,309.30 = 72,319.40/x
  3. Step 3: Cross multiply
    142,400.60x = 213,309.30 × 72,319.40
  4. Step 4: Simplify right side
    142,400.60x = 15,426,400,590.42
  5. Step 5: Solve for x
    x = 15,426,400,590.42/142,400.60
  6. Step 6: Final answer
    x = 108,331.01

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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.