Home / 103,187.30-142,338.13-64,886.23

Finding the Fourth Proportional to 103,187.30, 142,338.13 and 64,886.23

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Solution

The fourth proportional to 103,187.30, 142,338.13 and 64,886.23 is: 89,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,187.30 : 142,338.13 = 64,886.23 : x
  2. Step 2: Convert to fraction form
    103,187.30/142,338.13 = 64,886.23/x
  3. Step 3: Cross multiply
    103,187.30x = 142,338.13 × 64,886.23
  4. Step 4: Simplify right side
    103,187.30x = 9,235,784,640.95
  5. Step 5: Solve for x
    x = 9,235,784,640.95/103,187.30
  6. Step 6: Final answer
    x = 89,505.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.