Home / 156,670.65-235,005.98-90,315.45

Finding the Fourth Proportional to 156,670.65, 235,005.98 and 90,315.45

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Solution

The fourth proportional to 156,670.65, 235,005.98 and 90,315.45 is: 135,473.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,670.65 : 235,005.98 = 90,315.45 : x
  2. Step 2: Convert to fraction form
    156,670.65/235,005.98 = 90,315.45/x
  3. Step 3: Cross multiply
    156,670.65x = 235,005.98 × 90,315.45
  4. Step 4: Simplify right side
    156,670.65x = 21,224,670,384.81
  5. Step 5: Solve for x
    x = 21,224,670,384.81/156,670.65
  6. Step 6: Final answer
    x = 135,473.18

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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.