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Finding the Fourth Proportional to 93,312,068.80, 139,968,103.20 and 84,809,012.80

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Solution

The fourth proportional to 93,312,068.80, 139,968,103.20 and 84,809,012.80 is: 127,213,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,068.80 : 139,968,103.20 = 84,809,012.80 : x
  2. Step 2: Convert to fraction form
    93,312,068.80/139,968,103.20 = 84,809,012.80/x
  3. Step 3: Cross multiply
    93,312,068.80x = 139,968,103.20 × 84,809,012.80
  4. Step 4: Simplify right side
    93,312,068.80x = 11,870,556,655,880,520
  5. Step 5: Solve for x
    x = 11,870,556,655,880,520/93,312,068.80
  6. Step 6: Final answer
    x = 127,213,519.20

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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.