Home / 118,530.16-163,438.60-75,441.40

Finding the Fourth Proportional to 118,530.16, 163,438.60 and 75,441.40

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Solution

The fourth proportional to 118,530.16, 163,438.60 and 75,441.40 is: 104,024.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,530.16 : 163,438.60 = 75,441.40 : x
  2. Step 2: Convert to fraction form
    118,530.16/163,438.60 = 75,441.40/x
  3. Step 3: Cross multiply
    118,530.16x = 163,438.60 × 75,441.40
  4. Step 4: Simplify right side
    118,530.16x = 12,330,036,342.29
  5. Step 5: Solve for x
    x = 12,330,036,342.29/118,530.16
  6. Step 6: Final answer
    x = 104,024.47

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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.