Home / 118,537,979.40-163,607,823.62-72,143,175.24

Finding the Fourth Proportional to 118,537,979.40, 163,607,823.62 and 72,143,175.24

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Solution

The fourth proportional to 118,537,979.40, 163,607,823.62 and 72,143,175.24 is: 99,573,047.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,537,979.40 : 163,607,823.62 = 72,143,175.24 : x
  2. Step 2: Convert to fraction form
    118,537,979.40/163,607,823.62 = 72,143,175.24/x
  3. Step 3: Cross multiply
    118,537,979.40x = 163,607,823.62 × 72,143,175.24
  4. Step 4: Simplify right side
    118,537,979.40x = 11,803,187,890,052,670
  5. Step 5: Solve for x
    x = 11,803,187,890,052,670/118,537,979.40
  6. Step 6: Final answer
    x = 99,573,047.81

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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.