Home / 118,647.18-163,730.92-64,931.12

Finding the Fourth Proportional to 118,647.18, 163,730.92 and 64,931.12

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Solution

The fourth proportional to 118,647.18, 163,730.92 and 64,931.12 is: 89,603.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,647.18 : 163,730.92 = 64,931.12 : x
  2. Step 2: Convert to fraction form
    118,647.18/163,730.92 = 64,931.12/x
  3. Step 3: Cross multiply
    118,647.18x = 163,730.92 × 64,931.12
  4. Step 4: Simplify right side
    118,647.18x = 10,631,232,014.23
  5. Step 5: Solve for x
    x = 10,631,232,014.23/118,647.18
  6. Step 6: Final answer
    x = 89,603.75

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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.