Home / 118,871,999.40-178,307,999.10-77,260,169.10

Finding the Fourth Proportional to 118,871,999.40, 178,307,999.10 and 77,260,169.10

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Solution

The fourth proportional to 118,871,999.40, 178,307,999.10 and 77,260,169.10 is: 115,890,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,871,999.40 : 178,307,999.10 = 77,260,169.10 : x
  2. Step 2: Convert to fraction form
    118,871,999.40/178,307,999.10 = 77,260,169.10/x
  3. Step 3: Cross multiply
    118,871,999.40x = 178,307,999.10 × 77,260,169.10
  4. Step 4: Simplify right side
    118,871,999.40x = 13,776,106,162,348,646
  5. Step 5: Solve for x
    x = 13,776,106,162,348,646/118,871,999.40
  6. Step 6: Final answer
    x = 115,890,253.65

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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.