Home / 99,689.68-137,570.76-57,261.52

Finding the Fourth Proportional to 99,689.68, 137,570.76 and 57,261.52

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Solution

The fourth proportional to 99,689.68, 137,570.76 and 57,261.52 is: 79,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,689.68 : 137,570.76 = 57,261.52 : x
  2. Step 2: Convert to fraction form
    99,689.68/137,570.76 = 57,261.52/x
  3. Step 3: Cross multiply
    99,689.68x = 137,570.76 × 57,261.52
  4. Step 4: Simplify right side
    99,689.68x = 7,877,510,825.16
  5. Step 5: Solve for x
    x = 7,877,510,825.16/99,689.68
  6. Step 6: Final answer
    x = 79,020.32

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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.