Home / 210,242.18-315,404.88-77,123.60

Finding the Fourth Proportional to 210,242.18, 315,404.88 and 77,123.60

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Solution

The fourth proportional to 210,242.18, 315,404.88 and 77,123.60 is: 115,700.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,242.18 : 315,404.88 = 77,123.60 : x
  2. Step 2: Convert to fraction form
    210,242.18/315,404.88 = 77,123.60/x
  3. Step 3: Cross multiply
    210,242.18x = 315,404.88 × 77,123.60
  4. Step 4: Simplify right side
    210,242.18x = 24,325,159,803.17
  5. Step 5: Solve for x
    x = 24,325,159,803.17/210,242.18
  6. Step 6: Final answer
    x = 115,700.66

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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.