Home / 145,285.53-217,522.28-78,486.35

Finding the Fourth Proportional to 145,285.53, 217,522.28 and 78,486.35

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Solution

The fourth proportional to 145,285.53, 217,522.28 and 78,486.35 is: 117,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,285.53 : 217,522.28 = 78,486.35 : x
  2. Step 2: Convert to fraction form
    145,285.53/217,522.28 = 78,486.35/x
  3. Step 3: Cross multiply
    145,285.53x = 217,522.28 × 78,486.35
  4. Step 4: Simplify right side
    145,285.53x = 17,072,528,320.83
  5. Step 5: Solve for x
    x = 17,072,528,320.83/145,285.53
  6. Step 6: Final answer
    x = 117,510.18

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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.