Home / 105,430.56-145,497.80-57,683.90

Finding the Fourth Proportional to 105,430.56, 145,497.80 and 57,683.90

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Solution

The fourth proportional to 105,430.56, 145,497.80 and 57,683.90 is: 79,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,430.56 : 145,497.80 = 57,683.90 : x
  2. Step 2: Convert to fraction form
    105,430.56/145,497.80 = 57,683.90/x
  3. Step 3: Cross multiply
    105,430.56x = 145,497.80 × 57,683.90
  4. Step 4: Simplify right side
    105,430.56x = 8,392,879,529.51
  5. Step 5: Solve for x
    x = 8,392,879,529.51/105,430.56
  6. Step 6: Final answer
    x = 79,605.76

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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.