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Finding the Fourth Proportional to 139,297,495.32, 208,946,729.16 and 42,254,039.16

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Solution

The fourth proportional to 139,297,495.32, 208,946,729.16 and 42,254,039.16 is: 63,381,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,297,495.32 : 208,946,729.16 = 42,254,039.16 : x
  2. Step 2: Convert to fraction form
    139,297,495.32/208,946,729.16 = 42,254,039.16/x
  3. Step 3: Cross multiply
    139,297,495.32x = 208,946,729.16 × 42,254,039.16
  4. Step 4: Simplify right side
    139,297,495.32x = 8,828,843,276,280,553
  5. Step 5: Solve for x
    x = 8,828,843,276,280,553/139,297,495.32
  6. Step 6: Final answer
    x = 63,381,206.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.