Home / 142,209.59-213,431.02-72,108.95

Finding the Fourth Proportional to 142,209.59, 213,431.02 and 72,108.95

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Solution

The fourth proportional to 142,209.59, 213,431.02 and 72,108.95 is: 108,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,209.59 : 213,431.02 = 72,108.95 : x
  2. Step 2: Convert to fraction form
    142,209.59/213,431.02 = 72,108.95/x
  3. Step 3: Cross multiply
    142,209.59x = 213,431.02 × 72,108.95
  4. Step 4: Simplify right side
    142,209.59x = 15,390,285,502.20
  5. Step 5: Solve for x
    x = 15,390,285,502.20/142,209.59
  6. Step 6: Final answer
    x = 108,222.56

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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.