Home / 210,045.60-315,088.02-83,655.36

Finding the Fourth Proportional to 210,045.60, 315,088.02 and 83,655.36

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Solution

The fourth proportional to 210,045.60, 315,088.02 and 83,655.36 is: 125,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,045.60 : 315,088.02 = 83,655.36 : x
  2. Step 2: Convert to fraction form
    210,045.60/315,088.02 = 83,655.36/x
  3. Step 3: Cross multiply
    210,045.60x = 315,088.02 × 83,655.36
  4. Step 4: Simplify right side
    210,045.60x = 26,358,801,744.79
  5. Step 5: Solve for x
    x = 26,358,801,744.79/210,045.60
  6. Step 6: Final answer
    x = 125,490.85

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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.