Home / 91,606.86-137,207.28-70,390.73

Finding the Fourth Proportional to 91,606.86, 137,207.28 and 70,390.73

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Solution

The fourth proportional to 91,606.86, 137,207.28 and 70,390.73 is: 105,430.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,606.86 : 137,207.28 = 70,390.73 : x
  2. Step 2: Convert to fraction form
    91,606.86/137,207.28 = 70,390.73/x
  3. Step 3: Cross multiply
    91,606.86x = 137,207.28 × 70,390.73
  4. Step 4: Simplify right side
    91,606.86x = 9,658,121,207.50
  5. Step 5: Solve for x
    x = 9,658,121,207.50/91,606.86
  6. Step 6: Final answer
    x = 105,430.11

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1.5x scale

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.