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Finding the Fourth Proportional to 120,316.02, 180,413.26 and 70,411.11

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Solution

The fourth proportional to 120,316.02, 180,413.26 and 70,411.11 is: 105,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,316.02 : 180,413.26 = 70,411.11 : x
  2. Step 2: Convert to fraction form
    120,316.02/180,413.26 = 70,411.11/x
  3. Step 3: Cross multiply
    120,316.02x = 180,413.26 × 70,411.11
  4. Step 4: Simplify right side
    120,316.02x = 12,703,097,042.74
  5. Step 5: Solve for x
    x = 12,703,097,042.74/120,316.02
  6. Step 6: Final answer
    x = 105,581.10

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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.