Home / 280,088.10-420,132.15-93,075.30

Finding the Fourth Proportional to 280,088.10, 420,132.15 and 93,075.30

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Solution

The fourth proportional to 280,088.10, 420,132.15 and 93,075.30 is: 139,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,088.10 : 420,132.15 = 93,075.30 : x
  2. Step 2: Convert to fraction form
    280,088.10/420,132.15 = 93,075.30/x
  3. Step 3: Cross multiply
    280,088.10x = 420,132.15 × 93,075.30
  4. Step 4: Simplify right side
    280,088.10x = 39,103,925,900.90
  5. Step 5: Solve for x
    x = 39,103,925,900.90/280,088.10
  6. Step 6: Final answer
    x = 139,612.95

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1.5x scale

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.