Home / 118,430.13-163,433.39-64,715.16

Finding the Fourth Proportional to 118,430.13, 163,433.39 and 64,715.16

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Solution

The fourth proportional to 118,430.13, 163,433.39 and 64,715.16 is: 89,306.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,430.13 : 163,433.39 = 64,715.16 : x
  2. Step 2: Convert to fraction form
    118,430.13/163,433.39 = 64,715.16/x
  3. Step 3: Cross multiply
    118,430.13x = 163,433.39 × 64,715.16
  4. Step 4: Simplify right side
    118,430.13x = 10,576,617,659.62
  5. Step 5: Solve for x
    x = 10,576,617,659.62/118,430.13
  6. Step 6: Final answer
    x = 89,306.81

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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.