Home / 129,389,860.86-178,254,563.13-90,160,459.26

Finding the Fourth Proportional to 129,389,860.86, 178,254,563.13 and 90,160,459.26

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Solution

The fourth proportional to 129,389,860.86, 178,254,563.13 and 90,160,459.26 is: 124,209,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,389,860.86 : 178,254,563.13 = 90,160,459.26 : x
  2. Step 2: Convert to fraction form
    129,389,860.86/178,254,563.13 = 90,160,459.26/x
  3. Step 3: Cross multiply
    129,389,860.86x = 178,254,563.13 × 90,160,459.26
  4. Step 4: Simplify right side
    129,389,860.86x = 16,071,513,276,991,464
  5. Step 5: Solve for x
    x = 16,071,513,276,991,464/129,389,860.86
  6. Step 6: Final answer
    x = 124,209,989.64

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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.