Home / 153,979,840.21-212,420,950.93-136,356,702.61

Finding the Fourth Proportional to 153,979,840.21, 212,420,950.93 and 136,356,702.61

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Solution

The fourth proportional to 153,979,840.21, 212,420,950.93 and 136,356,702.61 is: 188,109,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,979,840.21 : 212,420,950.93 = 136,356,702.61 : x
  2. Step 2: Convert to fraction form
    153,979,840.21/212,420,950.93 = 136,356,702.61/x
  3. Step 3: Cross multiply
    153,979,840.21x = 212,420,950.93 × 136,356,702.61
  4. Step 4: Simplify right side
    153,979,840.21x = 28,965,020,434,095,416
  5. Step 5: Solve for x
    x = 28,965,020,434,095,416/153,979,840.21
  6. Step 6: Final answer
    x = 188,109,173.22

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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.