Home / 99,072,108.80-148,608,163.20-74,885,638.40

Finding the Fourth Proportional to 99,072,108.80, 148,608,163.20 and 74,885,638.40

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Solution

The fourth proportional to 99,072,108.80, 148,608,163.20 and 74,885,638.40 is: 112,328,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072,108.80 : 148,608,163.20 = 74,885,638.40 : x
  2. Step 2: Convert to fraction form
    99,072,108.80/148,608,163.20 = 74,885,638.40/x
  3. Step 3: Cross multiply
    99,072,108.80x = 148,608,163.20 × 74,885,638.40
  4. Step 4: Simplify right side
    99,072,108.80x = 11,128,617,172,683,386
  5. Step 5: Solve for x
    x = 11,128,617,172,683,386/99,072,108.80
  6. Step 6: Final answer
    x = 112,328,457.60

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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.