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Finding the Fourth Proportional to 93,271.60, 139,907.40 and 78,837.40

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Solution

The fourth proportional to 93,271.60, 139,907.40 and 78,837.40 is: 118,256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,271.60 : 139,907.40 = 78,837.40 : x
  2. Step 2: Convert to fraction form
    93,271.60/139,907.40 = 78,837.40/x
  3. Step 3: Cross multiply
    93,271.60x = 139,907.40 × 78,837.40
  4. Step 4: Simplify right side
    93,271.60x = 11,029,935,656.76
  5. Step 5: Solve for x
    x = 11,029,935,656.76/93,271.60
  6. Step 6: Final answer
    x = 118,256.10

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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.