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Finding the Fourth Proportional to 180,312.70, 248,828.45 and 99,740.16

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Solution

The fourth proportional to 180,312.70, 248,828.45 and 99,740.16 is: 137,639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,312.70 : 248,828.45 = 99,740.16 : x
  2. Step 2: Convert to fraction form
    180,312.70/248,828.45 = 99,740.16/x
  3. Step 3: Cross multiply
    180,312.70x = 248,828.45 × 99,740.16
  4. Step 4: Simplify right side
    180,312.70x = 24,818,189,415.55
  5. Step 5: Solve for x
    x = 24,818,189,415.55/180,312.70
  6. Step 6: Final answer
    x = 137,639.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.