Home / 99,437.40-137,225.64-54,117.90

Finding the Fourth Proportional to 99,437.40, 137,225.64 and 54,117.90

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Solution

The fourth proportional to 99,437.40, 137,225.64 and 54,117.90 is: 74,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,437.40 : 137,225.64 = 54,117.90 : x
  2. Step 2: Convert to fraction form
    99,437.40/137,225.64 = 54,117.90/x
  3. Step 3: Cross multiply
    99,437.40x = 137,225.64 × 54,117.90
  4. Step 4: Simplify right side
    99,437.40x = 7,426,363,462.96
  5. Step 5: Solve for x
    x = 7,426,363,462.96/99,437.40
  6. Step 6: Final answer
    x = 74,683.81

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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.