Home / 210,267.09-315,442.13-77,148.45

Finding the Fourth Proportional to 210,267.09, 315,442.13 and 77,148.45

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Solution

The fourth proportional to 210,267.09, 315,442.13 and 77,148.45 is: 115,737.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,267.09 : 315,442.13 = 77,148.45 : x
  2. Step 2: Convert to fraction form
    210,267.09/315,442.13 = 77,148.45/x
  3. Step 3: Cross multiply
    210,267.09x = 315,442.13 × 77,148.45
  4. Step 4: Simplify right side
    210,267.09x = 24,335,871,008.46
  5. Step 5: Solve for x
    x = 24,335,871,008.46/210,267.09
  6. Step 6: Final answer
    x = 115,737.90

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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.