Home / 99,715.46-137,630.95-57,298.59

Finding the Fourth Proportional to 99,715.46, 137,630.95 and 57,298.59

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Solution

The fourth proportional to 99,715.46, 137,630.95 and 57,298.59 is: 79,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,715.46 : 137,630.95 = 57,298.59 : x
  2. Step 2: Convert to fraction form
    99,715.46/137,630.95 = 57,298.59/x
  3. Step 3: Cross multiply
    99,715.46x = 137,630.95 × 57,298.59
  4. Step 4: Simplify right side
    99,715.46x = 7,886,059,232.11
  5. Step 5: Solve for x
    x = 7,886,059,232.11/99,715.46
  6. Step 6: Final answer
    x = 79,085.63

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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.