Home / 91,749.94-137,430.50-69,316.18

Finding the Fourth Proportional to 91,749.94, 137,430.50 and 69,316.18

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Solution

The fourth proportional to 91,749.94, 137,430.50 and 69,316.18 is: 103,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,749.94 : 137,430.50 = 69,316.18 : x
  2. Step 2: Convert to fraction form
    91,749.94/137,430.50 = 69,316.18/x
  3. Step 3: Cross multiply
    91,749.94x = 137,430.50 × 69,316.18
  4. Step 4: Simplify right side
    91,749.94x = 9,526,157,275.49
  5. Step 5: Solve for x
    x = 9,526,157,275.49/91,749.94
  6. Step 6: Final answer
    x = 103,827.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.