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Finding the Fourth Proportional to 125,742.84, 173,510.57 and 72,024.65

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Solution

The fourth proportional to 125,742.84, 173,510.57 and 72,024.65 is: 99,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,742.84 : 173,510.57 = 72,024.65 : x
  2. Step 2: Convert to fraction form
    125,742.84/173,510.57 = 72,024.65/x
  3. Step 3: Cross multiply
    125,742.84x = 173,510.57 × 72,024.65
  4. Step 4: Simplify right side
    125,742.84x = 12,497,038,075.55
  5. Step 5: Solve for x
    x = 12,497,038,075.55/125,742.84
  6. Step 6: Final answer
    x = 99,385.68

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1.5x scale

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.