Home / 129,254,692.80-193,785,616.80-78,125,937.60

Finding the Fourth Proportional to 129,254,692.80, 193,785,616.80 and 78,125,937.60

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Solution

The fourth proportional to 129,254,692.80, 193,785,616.80 and 78,125,937.60 is: 117,130,625.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,254,692.80 : 193,785,616.80 = 78,125,937.60 : x
  2. Step 2: Convert to fraction form
    129,254,692.80/193,785,616.80 = 78,125,937.60/x
  3. Step 3: Cross multiply
    129,254,692.80x = 193,785,616.80 × 78,125,937.60
  4. Step 4: Simplify right side
    129,254,692.80x = 15,139,683,005,894,312
  5. Step 5: Solve for x
    x = 15,139,683,005,894,312/129,254,692.80
  6. Step 6: Final answer
    x = 117,130,625.42

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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.