Home / 134,985.20-202,477.80-90,748.40

Finding the Fourth Proportional to 134,985.20, 202,477.80 and 90,748.40

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Solution

The fourth proportional to 134,985.20, 202,477.80 and 90,748.40 is: 136,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,985.20 : 202,477.80 = 90,748.40 : x
  2. Step 2: Convert to fraction form
    134,985.20/202,477.80 = 90,748.40/x
  3. Step 3: Cross multiply
    134,985.20x = 202,477.80 × 90,748.40
  4. Step 4: Simplify right side
    134,985.20x = 18,374,536,385.52
  5. Step 5: Solve for x
    x = 18,374,536,385.52/134,985.20
  6. Step 6: Final answer
    x = 136,122.60

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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.