Home / 101,638,701.52-152,058,961.04-78,434,325.28

Finding the Fourth Proportional to 101,638,701.52, 152,058,961.04 and 78,434,325.28

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Solution

The fourth proportional to 101,638,701.52, 152,058,961.04 and 78,434,325.28 is: 117,343,510.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,638,701.52 : 152,058,961.04 = 78,434,325.28 : x
  2. Step 2: Convert to fraction form
    101,638,701.52/152,058,961.04 = 78,434,325.28/x
  3. Step 3: Cross multiply
    101,638,701.52x = 152,058,961.04 × 78,434,325.28
  4. Step 4: Simplify right side
    101,638,701.52x = 11,926,642,011,950,206
  5. Step 5: Solve for x
    x = 11,926,642,011,950,206/101,638,701.52
  6. Step 6: Final answer
    x = 117,343,510.23

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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.