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Finding the Fourth Proportional to 103,560, 143,323.66 and 101,075.93

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Solution

The fourth proportional to 103,560, 143,323.66 and 101,075.93 is: 139,885.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,560 : 143,323.66 = 101,075.93 : x
  2. Step 2: Convert to fraction form
    103,560/143,323.66 = 101,075.93/x
  3. Step 3: Cross multiply
    103,560x = 143,323.66 × 101,075.93
  4. Step 4: Simplify right side
    103,560x = 14,486,572,225.50
  5. Step 5: Solve for x
    x = 14,486,572,225.50/103,560
  6. Step 6: Final answer
    x = 139,885.79

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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.