Home / 113,187.20-169,780.80-103,510.40

Finding the Fourth Proportional to 113,187.20, 169,780.80 and 103,510.40

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Solution

The fourth proportional to 113,187.20, 169,780.80 and 103,510.40 is: 155,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,187.20 : 169,780.80 = 103,510.40 : x
  2. Step 2: Convert to fraction form
    113,187.20/169,780.80 = 103,510.40/x
  3. Step 3: Cross multiply
    113,187.20x = 169,780.80 × 103,510.40
  4. Step 4: Simplify right side
    113,187.20x = 17,574,078,520.32
  5. Step 5: Solve for x
    x = 17,574,078,520.32/113,187.20
  6. Step 6: Final answer
    x = 155,265.60

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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.