Home / 101,785.20-152,677.80-70,292.40

Finding the Fourth Proportional to 101,785.20, 152,677.80 and 70,292.40

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Solution

The fourth proportional to 101,785.20, 152,677.80 and 70,292.40 is: 105,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,785.20 : 152,677.80 = 70,292.40 : x
  2. Step 2: Convert to fraction form
    101,785.20/152,677.80 = 70,292.40/x
  3. Step 3: Cross multiply
    101,785.20x = 152,677.80 × 70,292.40
  4. Step 4: Simplify right side
    101,785.20x = 10,732,088,988.72
  5. Step 5: Solve for x
    x = 10,732,088,988.72/101,785.20
  6. Step 6: Final answer
    x = 105,438.60

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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.