Home / 99,681.32-137,558.48-54,359.40

Finding the Fourth Proportional to 99,681.32, 137,558.48 and 54,359.40

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Solution

The fourth proportional to 99,681.32, 137,558.48 and 54,359.40 is: 75,015.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,681.32 : 137,558.48 = 54,359.40 : x
  2. Step 2: Convert to fraction form
    99,681.32/137,558.48 = 54,359.40/x
  3. Step 3: Cross multiply
    99,681.32x = 137,558.48 × 54,359.40
  4. Step 4: Simplify right side
    99,681.32x = 7,477,596,437.71
  5. Step 5: Solve for x
    x = 7,477,596,437.71/99,681.32
  6. Step 6: Final answer
    x = 75,015.02

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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.