Home / 154,152.08-212,756.94-89,641.28

Finding the Fourth Proportional to 154,152.08, 212,756.94 and 89,641.28

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Solution

The fourth proportional to 154,152.08, 212,756.94 and 89,641.28 is: 123,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,152.08 : 212,756.94 = 89,641.28 : x
  2. Step 2: Convert to fraction form
    154,152.08/212,756.94 = 89,641.28/x
  3. Step 3: Cross multiply
    154,152.08x = 212,756.94 × 89,641.28
  4. Step 4: Simplify right side
    154,152.08x = 19,071,804,430.48
  5. Step 5: Solve for x
    x = 19,071,804,430.48/154,152.08
  6. Step 6: Final answer
    x = 123,720.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.