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Finding the Fourth Proportional to 99,792,149.70, 149,688,224.55 and 56,793,980.10

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Solution

The fourth proportional to 99,792,149.70, 149,688,224.55 and 56,793,980.10 is: 85,190,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,792,149.70 : 149,688,224.55 = 56,793,980.10 : x
  2. Step 2: Convert to fraction form
    99,792,149.70/149,688,224.55 = 56,793,980.10/x
  3. Step 3: Cross multiply
    99,792,149.70x = 149,688,224.55 × 56,793,980.10
  4. Step 4: Simplify right side
    99,792,149.70x = 8,501,390,046,297,032
  5. Step 5: Solve for x
    x = 8,501,390,046,297,032/99,792,149.70
  6. Step 6: Final answer
    x = 85,190,970.15

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Similar ratio
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1.5x scale

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.