Home / 105,013,403.40-157,520,105.10-90,652,686.60

Finding the Fourth Proportional to 105,013,403.40, 157,520,105.10 and 90,652,686.60

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Solution

The fourth proportional to 105,013,403.40, 157,520,105.10 and 90,652,686.60 is: 135,979,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,013,403.40 : 157,520,105.10 = 90,652,686.60 : x
  2. Step 2: Convert to fraction form
    105,013,403.40/157,520,105.10 = 90,652,686.60/x
  3. Step 3: Cross multiply
    105,013,403.40x = 157,520,105.10 × 90,652,686.60
  4. Step 4: Simplify right side
    105,013,403.40x = 14,279,620,720,829,360
  5. Step 5: Solve for x
    x = 14,279,620,720,829,360/105,013,403.40
  6. Step 6: Final answer
    x = 135,979,029.90

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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.