Home / 99,970.16-137,973.96-57,525.84

Finding the Fourth Proportional to 99,970.16, 137,973.96 and 57,525.84

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Solution

The fourth proportional to 99,970.16, 137,973.96 and 57,525.84 is: 79,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,970.16 : 137,973.96 = 57,525.84 : x
  2. Step 2: Convert to fraction form
    99,970.16/137,973.96 = 57,525.84/x
  3. Step 3: Cross multiply
    99,970.16x = 137,973.96 × 57,525.84
  4. Step 4: Simplify right side
    99,970.16x = 7,937,067,947.13
  5. Step 5: Solve for x
    x = 7,937,067,947.13/99,970.16
  6. Step 6: Final answer
    x = 79,394.37

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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.