Home / 137,624.64-190,000.80-105,299.76

Finding the Fourth Proportional to 137,624.64, 190,000.80 and 105,299.76

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Solution

The fourth proportional to 137,624.64, 190,000.80 and 105,299.76 is: 145,373.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,624.64 : 190,000.80 = 105,299.76 : x
  2. Step 2: Convert to fraction form
    137,624.64/190,000.80 = 105,299.76/x
  3. Step 3: Cross multiply
    137,624.64x = 190,000.80 × 105,299.76
  4. Step 4: Simplify right side
    137,624.64x = 20,007,038,639.81
  5. Step 5: Solve for x
    x = 20,007,038,639.81/137,624.64
  6. Step 6: Final answer
    x = 145,373.96

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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.